Maybe Ronnie and his partner Greg -- https://www.masseurfinder.com/members/ronniesmassage.shtml -- I saw them separately for two-handed and together for four-handed several times for a couple of years, and they're great masseurs and very fun (and were OK with me seeing one or the other separately).
A few years ago, however, they flaked out on me on separate occasions. I tried to schedule a session with Ronnie, and he didn't respond to three text messages (4 hours between text 1 and text 2, and more than 12 hours between text 2 and text 3, and they were polite). About a year later, I had a similar experience with Greg -- no initial response (he had a family situation that occupied him); a few months later, after texting back and forth and agreeing to set up an appointment, I never heard from him. Now Greg doesn't appear to advertise at all -- he's on massageM4M.com but he's in "blue," which indicates he's unavailable, and Ronnie doesn't mention a four-handed experience on his profile that I linked you to. The most recent client review that mentioned a four-handed session with Greg was in September 2016.
Let me know how it turns out.