I'll support BSTs when they stop MPK'ing parties for trying to EXP off of the things they intend go charm. If you don't believe this happens, pt in the bottom of Garlaige Citadel in that 47-50ish range and you'll see what I'm talkin about. I know it's not all BST and that some are pretty good peoples (like you Kodi) but I'll be damned if I'll support most of those (_._) _[]_ 's.
And that BST in the link was an exceptional DD but IDK why he bothered charming at all, his pets did minimal damage to the mobs and only hurt his exp/hour. In my eyes, that's just a waste. I'm not sure if I'd bother partying with one though, so many better options out there once you hit 60 with the SAM/RNG, DRK/THF, WAR/THF, and many others to really pound out the damage. Hell a good THF/NIN can out damage that BST hands down.