Yes, every one. I'm the only keyboard aficionado (i.e. keyboard nut) that I personally know.
But I know what I like. And reading forums like GH, etc. tells me everything I need to know in order to make a purchase. When I bought my first mech board years ago, mainstream techies didn't even know what they were. If I went into Best Buy, Office Depot, Fry's, whatever, and asked a salesman about them, they gave me the deer-in-the-headlight look.
When I moved to Topre, same thing. Except with RF and HHKB, there's no sending/taking them back if you don't like them. Add to that their cost, and it becomes a leap of faith. But for me, it's been a good move. I'll take Topre over Cherry any day of the week.
With that said, there isn't a board I've purchased that I regret buying. It's been an adventure. If I could do it all over again, I would buy all the same boards.