I would not be surprised if BBFS becomes more of a "thing." It seems as if there is a bit of a saturated market in the mid-tier Chinese GFE market. Back in the late 1980's BB-everything was the norm and it was only when it became clear that HIV/AIDS could affect straight males & females did condoms become required by most providers. However, hetero male and female transmission rates are fairly low:
https://www.cdc.gov/hiv/statistics/overview/ataglance.html
The CDC numbers do not reflect Asian sub-populations in this data, which suggests that there were literally only a handful of Asians who contracted the disease. If you're a gay/bi black male, you are at the highest risk, followed by Latino gay/bisexual males and then white gay/bi males. I assume that gay dudes are not regularly booking sessions at AMPS. Not sure how many bi-guys are going to AMPs though. Still probably a small number.
Personally, BBFS is not my thing with a working gal and even with civilians I go for the condom.