No... the caribiner wouldn't care in the least, but it seems that the climber who is actually trying to get to the ground before lunchtime might; or the rigged-off wood for that matter.
Really appreciate the advice about the R.E.I. stuff. Still... I'm thinkin' the stuff's not Nylon. I haven't quite had the leisure yet to do some extreme burn-down (from a low height, of course!) type of testing yet, but I have done some relatively big descents from these nasty Lombardys we've been working on, and it doesn't seem to glaze over bad at all. Seems on-par with the "Bee-line" stuff so far--except for the fact that it is of a smaller diameter. Yah, I keep twisting it around each time I tie it so as to wear it all around more or less evenly, but it really doesn't seem to wear too fast at all. I'm almost scared to write this for fear that the uninitiate might try the same stunt, but the cost thing is almost too hard to overlook.
I realize that this should probably be in the climbing forum; it's just that I wouldn't want to encourage anybody. As of yet... yeah... God only knows what it's made of. By the way: does anybody have any idea what the difference between "tensile strength" and "average breaking strength" might be. Like they actually took the time to test it one way (a.b.s.) and just took a guess on the other!