The only place I had a demo was at On-One. They just put some pedals on and I took it for a spin around the outside of the building.
They are pretty nimble and quick off the mark for something with such big wheels. They also handle really well and staedy as a rock too.
Since I have had mine it's been weapon of choice for most of my riding. Thw 1x10 is a great set up but it does get a bit hard going on some of the steeper hills around me (Snowdonia)
They are a heavy bike, dont expect to be putting it on your shoulder for long!
I'm riding Cadair Idris in North Wales this weekend and thinking of doing it on the fatty
Dont hold your breath for getting on to the Uk Fat Bike forum any time soon though