Hi, I’m 178cm and I ride a 57cm pro6 v1. I previously had the pro5 in 54 and found it just a little short and low in the headtube. Now the geometry of the pro5 & 6 may differ but I find the 57 cm fits me really well with a 90cm stem.
Ideally it would have more standover height as the top tubes are horizontal but in practice it hasn’t been an issue off-road. If I was buying one now is be tempted to go for the 55.5 with a longer stem but I prefer how it handles as it is.
Other things about the frame: clearance at the bottom bracket is ok but not great in the mud due to the chainstay bridge – a 35 wide knobbly is about the limit allowing room for gunk. They are not the lightest or sprightliest on road but generally comfortable and well behaved. A pretty versatile frame all told and genuinely good fun off road on mud gravel and other currently fashionable non-tarmac surfaces.
That said, have you looked at the new Tripster AT? It’s a bit heavier still but looks like it could be built up in a number of ways. Quite tempted by one myself.
