No FetLife, at least in Montreal, is a community out of the escort world. All events I have done via that site involved regular folks
But yes it involves a lot of kinky fetish stuff that is not well understood and quickly judged on such sites like Terb. You need a no review policy on kinky sessions believe me.
That said perhaps Fetlife would be open to having you a publicized event even if $ is involved. Would be good to try. The dudes I met on these meet-ups on Fetlife were always super respectful and so nice.
In Montreal a few years ago there was an Agency specializing in these kinds of events. It was called Unicorn. I once entered the incall (the door was open) only to see the girl tied up and blindfolded. Grrrrr....
In all the kinky events I did there are 2 things I found extremely important. Have a secret word, mine was yellow (or 2 knocks on the floor if the girl`s mouth was not available haha). And second, have a 15-minute cool-down period at the end. Both parties cannot leave a kinky event and 1 minute later be back in the real world. No, have a 15 minute where you ask the dude to massage you