In reply to obi-wan nick b:
I just used one in Venezuela recently. Held a 40ft factor 2 fall straight onto the belay with no noticeable slippage so clearly no problem with rope grab. Didn't ab on it so can't say about heat dissipation but I used to have an HB equivalent and that never seemed to get too hot so I doubt the bugette would. Best practice when abbing in hot weather though is always to go slowly and try to avoid coming to a complete stop, so that if the device is very hot it doesn't rest on the same part of the rope for more than a fraction of a second.