I'm trying to decide if I need to allocate space for an argon bottle (in sidemount). I know some people use 50% for inflation and don't bother carrying an extra bottle. Would there be any added concern when using a heated vest (or heated whatever)? I'm not sure what temperatures the wires in those undergarments could reach, and whether having 50% Nitrox in there is enough to make any real difference. My gut says it's a bad idea. Thoughts?