I have been watching old Dual Survival episodes on Discovery Velocity, and Dave Canterbury comes across as rational and sociable, if a bit hard headed and driven. Cody Lundin on the other hand reveals a massive arrogant ego in early episodes. I can respect an individual with advanced and useful outdoor knowledge, but how you convey it to your partner goes a long way. Lundin was outright condescending to Canterbury many times. Share with a good heart, don't look down your nose and belittle your partner.