Im toying with getting a Fatty Trail frame, dont need it just now so waiting a little while to see if it gets in any deals.
It was discussed in an earlier thread the geo chart wasnt clear if it was measured sagged, on-one emailed me back yesterday to say it might be sagged 20mm (they dont know). Standard quality on-one answer, so I decided to put the numbers in a geo spreadsheet and all the numbers are bang on for un-sagged 531mm fork length (120mm bluto).
I did a compare of the Trail (L) with the new Surly Wednesday (XL) and with the same 531mm fork (Wednesday geo is based on a 468mm rigid fork) the reach/stack numbers come out almost exactly the same, with BB a little lower on the Trail and steeper is seat angle.
So im confortable the geo is good, just need to confirm if it can fit 29+ tyres in the back (should do) and i think ill hit buy.