Just a little pic i knocked together and a small update:
http://www.tartybikes.trials-shack.co.uk/t...ecomparison.jpg
It appears (from trying to fit my old forks yesterday) that the reason for the higher bars (15mm higher) on the proto frame is that its head tube is 15mm longer!
Other than that, the wheelbase is a smidge longer, the top tube appears to follow a higher line, and the reach is a tad longer.
I had a bit of a (street) ride last night, and quite enjoyed it. As expected, even with 400g heavier forks than im used to, it sits on the back wheel very nicely. As Ben said, sidehopping appears easier, and I also got the hang of backwheeling quite quickly. Gapping/upping to front wheel is very very nice, the high BB puts you more over the front axle and the bike seems to just float up!
Back wheel gapping is very strange at first - the bike feels very light due to it wanting to fire the back end through, but with a small change in technique (not as much pedalling force and more body movement) I could gap as far as on my standard Rex.
Next up - natural, where im expecting it to shine :(