I've done it roughly 10 times with 8 or so ladies at various spots. Gets addictive when it's so easy, cheap and feels amazing of course. Have been tested and thankfully nothing. Had a scare after visiting Nelson St, a few hours after I went I felt a scratch and found a literal tick down there, I think from a towel used at the shop. Also got weirdly lectured by the lady there about doing BBFS while in the act, was weird (great service otherwise).
I do get great anxiety almost immediately after worrying if I caught something though.