The On-One looks like it actually for the money probably does the same thing.
the problem with the pompetamine is that it doesnt. It only has clearance for CX tyres and narrow ones at that (32mm ish)
Ive always hankered after a 2.35″+ tyre clearance pompetamine, but it’s never really been on the cards at On-One.
Ive fitted my rohloff into On-One slotted drop outs for years now, using my own adaptation of a speedbone, but it’s still a bodge. Again, it would be great to have a a set of swapouts designed for the rohloff for use on a monsterpetamine* frame.
* I want a licence fee for use of that name, Brant.