Also
http://strip4bit.com/ it is a very custom whitelabel of visit-x.
And camdough asian cam sites accept bitcoin via bitpay
Looking at activities of these sites and discussion levels in forums/reddit's , I think sales in btc for cam sites are very low.
I had plan to add btc pay (with revshare in btc for affiliates) to one of our cam sites, but it is on hold. Better doing poker/gambling sites for now, with btc.