We seem to have a good ratio of GMRS to HAM repeaters around here, but my side monitoring of the HAM repeaters shows much much more chatter on the GMRS side.
Albeit, hearing "BR549, monitoring" 10 times in two minutes and keeps stepping on the repeaters timed ident, so it has to try again, only to not be given enough time to finish its morse ident before its stepped on again... Heaven forbid you talk to him, your going to hear the same story - whether you heard it before or not, about how hes new to GMRS and its his XXth day on it, and he was a HAM for 20 years, so - busier, but worthwhile chatter in a lot of cases, not so much.