Together, Christina "Lusti" Lustenberger and Guillaume "Gee" Pierrel have teamed up for some of the most notable and impressive first descents in recent years. 

Lusti is an Association of Canadian Mountain Guides (ACMG) Ski Guide and professional skier. A career that started with alpine ski racing took Lusti all the way to the Olympics, but more than five knee surgeries later, a career pivot has taken her to ski some of the most impressive and challenging lines around the world. 

Gee, a french IFMGA Mountain Guide, got his start on skis through Nordic racing, but a love for the outdoors and the mountains brought him full circle. He too made a career pivot in his 20's, and what started out as ski instruction eventually led him to guide certification. 

Lusti and Gee join Sam and Adrian together, to talk about the partnership they've developed and the keys to their success in the mountains:

- With their first big mountain experiences on New Zealand's Mt. Cook in October 2024, Lusti and Gee recount their first descent on the mountain. 

- Following their success in New Zealand, Lusti invited Gee to join her on a more-than-a-decades long project on Canada's Mt. Robson. 

- With the ultimate partnership developed, and technical skills that complement each other nicely, Lusti and Gee have the ultimate potential to push forward the sport of Ski Mountaineering. 

Lusti and Gee's latest film, Robson, debuts at the Banff Mountain Film Festival on November 1. To learn more about Lusti and Gee, and follow their adventures, find them on Instagram @christinalusti and @geepierrel.

Follow our podcast on Instagram @duffelshufflepodcast where you can learn more about us and our guests. Visit our website at www.duffelshufflepodcast.com and join our mailing list. The Duffel Shuffle Podcast is supported by Alpenglow Expeditions, an internationally renowned mountain guide service based in Lake Tahoe, California. Visit www.alpenglowexpeditions.com or follow @alpenglowexpeditions on Instagram to learn more.

George Bell, a climber on the 1953 American Expedition to K2 said "It's a savage mountain that tries to kill you." Nearly than 75 years later, the reputation is intact. Adrian successfully climbed K2, without supplemental oxygen, in 2019, doubling down on his no o2 ascent of Everest in 2017.

With decades of experience climbing and guiding clients throughout the Himalaya, Adrian has spent little time in the Karakoram, and has only climbed K2 once. Following the 2025 K2 climbing season, Sam and Adrian connect to break down K2, and discuss Adrian's take on the mountain as well as his experience.

- Adrian shares his description of the route, starting with the trek in. Not only does he talk about some of the main features of the mountain, but he also discusses the famed objective hazards, from GI bugs to the Bottleneck Serac.

- Adrian shares a bit about why he's avoided K2 for most of his career, and how a tragic accident in 2008 took the life of a good friend, deterring him from the mountain for many years.

- Despite being supported by Topo Mena, who too has dreams of climbing K2 without oxygen, Adrian shares the one route on the mountain that he would climb, if it were possible.

Adrian's film, Breathtaking: K2 - The World's Most Dangerous Mountain, can be found on youtube.

Follow our podcast on Instagram @duffelshufflepodcast where you can learn more about us and our guests. Visit our website at www.duffelshufflepodcast.com and join our mailing list. The Duffel Shuffle Podcast is supported by Alpenglow Expeditions, an internationally renowned mountain guide service based in Lake Tahoe, California. Visit www.alpenglowexpeditions.com or follow @alpenglowexpeditions on Instagram to learn more.

Sam and Adrian catch up on their plans and what schedules look like as they head into winter. After the break, the two reflect on the podcast to-date, and share some exciting updates for future episodes. Moving forward, episodes will launch Wednesday's and be available in the early morning hours. Starting with episode 18, an editor will give The Duffel Shuffle a fresh sound, and future guests like Tommy Caldwell, Michelle Parker and Nick Russel will be joining in.

Sam and Adrian follow up on their conversation started in Episode 15. After discussion high altitude climbing and acclimatization, the two dive into a conversation about pre-acclimatization using hypoxic tents, and the program that Alpenglow Expeditions has established in Rapid Ascent. The program utilizes pre-acclimatization alongside advanced trip logistics to reduce the total expedition time by 25-50%. 

After discussing the three Piolets d'Or winners, and 60 finalists, Sam and Adrian jump into the complicated topic of high altitude climbing. The two share stories of their early experiences with altitude and talk about the basics of acclimatization and what a typical schedule might look at. Finally, they dive into the "aids" that are used for altitude climbing, from Diamox and Dexamethasone to Oxygen. A future episode will discuss the topic of Pre-Acclimatization using hypoxic tents, and what the Rapid Ascent system that Adrian has pioneered looks like.

Adrian and Sam chat about what it means to be a mountain guide. From introducing the American Mountain Guides Association (AMGA) and International Federation of Mountain Guide Associations (IFMGA) to discussing the decades of guides who came before the AMGA path was the standard, this episode is a great starting point for those curious about the training and business side of the  guiding industry.