Those were all taken with my old Canon S5is. It came with a small black bag from where ever my fiancee bought it from, and I jury rigged it to sit in front of me so I could get it out quickly. It worked pretty well, I ate it many times with the camera, and also gotten a fair amount of snow on it, as I like to go out when it is dumping, but it has worked fine. I got a 40d this summer, so I am trying to figure out how I will carry this one around with me.
I do realize I need to get into some more creative spots to take shots of my buddies going off cliffs, but, it's tough when I want to go off the cliff as well. So since I started carrying my S5 with me, my Modus operandi has been to convince the others to let me go first, then shoot from down where I end up. To get some good shots, I am going to have to sacrifice my turn to get into some better positions.