Not specifically that swap, but I have three Rohloffs and between them they have been in 9 frames (Not all mine) and 4 of those have been Thorns. The hub will be a straight swap, as long as you're keeping the same braking system, you might need new cables, the geometry has changed slightly, I think the cable routing has a little as well. Everything else I can think of is also a straight swap, stem, bars, seatpost, brakes, chainset (Might need new chain). Forks are different, are you swapping those over? They'll fit but they might change the handling. haven't really examined the geometry differences, I doubt they're big enough to warrant a different stem, you could either make the comparison, or ride it and see.
Hopefully World Tourer will be along to advise on the riding difference, he's had both. From a component POV, there's no worries.