Lefty, I'd say you definitely need pliers to change the blade, and like someone said earlier, its a good idea to practice first. I use the smallest pliers that Leatherman makes, and I carry those regardless so for me, no extra weight.
TAK, I think it may be the reference to the river rock that puts you over the Rambo line. Hell, that puts you squarely in Bear Grylls territory.....
