Took his H1 in 2009. Also was able to spectate earlier this month in Kiowa, Co. He is definitely blunt, which personally I like. In 09 and the clinic a month ago he did really get after a few ladies which the ladies definitely deserved every bit of it.
If you listen and really try, you will get along well with Buck. If your lazy and the type to question him and his methods, probably best that you stayed home. If you get your feelings hurt easily, stay home. It does make for good entertainment though.
I've probably watched his tapes hundreds of times (seriously) and seem to catch something I missed earlier. We had small classes in 09, maybe 12. In Kiowa there were 24 in H1 and 18 in H2. Way too many. All but maybe 5 of those horses should have probably been put into foundation horsemanship or back to ground working. I would like to take more advanced clinics from him but I'm just not 100% sold on the hackmore stage.