I visited Hong Kong twice the past week.
It was OK, and the club was filled with beautiful women, but I didn't have that great of a sexual experience. I sat mostly at the back stage tipping the ladies, but did on each visit find some decent looking women to chat with and buy drinks for them. Took them for sex upstairs and I guess I just wasn't into it anymore.
It's no fault of that sort of Tijuana / HK business model, but I've been spoiled by my experiences in Thailand.