I've kinda wondered about bar ends and handlebar width myself. I'm curious about some of the smaller bar ends out these days(as oppose to the big pipe things that came on my bike in 1998). Thanks for starting this thread.
I've thought about trying those exact grips. I currently use GP1s and definitely like them. If you've tried Ergon grips without bar ends, how would you compare them with the bar end grips? Ever hit/catch them on trees? I've knocked my bars on a tree or two in tight spots before and I'd hate for that to result in a crash with the bar ends. That's the thing that makes me hesitate with buying Ergon bar end grips.