IIRC, RSNF vouched and recommended the designer [Who seems to be a great guy and really talented] when he won the BOTM comp, I could be completely wrong though.
I normally give the client all the balls, since I really have nothing to lose but gain a lot more knowledge about vBulletin. Heck if I ever get screwed I'd just release the work for free and let the community develop it.
And most importantly don't expect custom addons to be compatible 100%, especially if you're seeking something extremely custom.
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