I totaly agree more companies need to have demoes. I would never buy a board without trying it out first since I have tried boards that on paper looked awesome but after riding it realized I don't even want another run on it.
Seems like the only brands I get to try around here are Burton, Capita and sometimes Endeveor. I ride burton and the gf rides capita, wonder why..
I would love to try mervin products but im not spending 500$ without trying it out first.
I wouldn't mind demoing Capita or Endevor. I think those would be fun boards to try.
If you want to demo a board just go to a shop that's local to whatever hill you ride and see if they demo mervin boards out! That's how I got to demo a mervin board.