Will the teeth on this device reduce the...
Will the teeth on this device reduce the life of my rope from continued use?
The teeth are smooth and rope wear won't be an issue at all. I suppose, theoretically, your rope is getting worn down by the friction of your gear (i.e. biners, belay device, etc), but at such a neglible rate that it would take much longer than the rated lifetime of your rope to create an issue. If you have rope wear issues, it won't be due to your biners or belay device...as long as you use them correctly, i.e. keep rope biners separate from bolt biners, etc. In other words, I wouldn't give a second thought to it.