I have tried the stock GT set up, which fits me ok, but I just don't like the feet forward set up for hooning around, as I can't shift my weight around when cornering quickly.
Also, I felt like my feet were sliding out to the ends of the pegs all the time, which was not a good feeling. Maybe that could have been dialed out by adjusting the foot peg position.....not sure.
The biggest No No for me was the feeling that I was a sitting duck for every pot-hole that the rear wheel hit......the shock through the seat was unavoidable with feet forward. Not so with the mid-controls.