I'm gearing up to climb mt.hood for the first time with my roommate who has climbing experience. I've spent a lot of time reading up on different forms of ice axe leashes and a lot of people, including the Mazamas suggest attaching the Ice axe directly to the climbing harness, which I have a tether to attach the ice axe to my harness. But recently my roommate said he wont climb with me if i'm not using a wrist leash, saying that I wouldn't be able to properly arrest a fall if I didn't have one, that I wouldn't be able to maintain a proper grip on the axe while climbing the steeper pitches, and that in the event of a fall if let go of the axe that the leash would help hold it in place. It sounds like he is relying on the leash to help support weight during the ascent. In all the researching I've been doing online and in textbooks, I've yet to find anything about using the leashes in this fashion. Everything I've read says it's pretty much just there to prevent loss of the tool, not to actually act in any life saving capacity... With that being said, I was wondering if there is anyone out there that has relied on the leash to be more then just a system to prevent tool loss?