I've been doing a bit of research on this topic but I need some help. I'm trying to build a bike with an internal gear hub to use for commuting but also for weekend riding, so I need something that I can throw drop bars on, 30+ mm tires, possibly fenders... I've been looking at the phoenix iro, the salsa casseroll, and the surly crosscheck for a frame, which I know are the usual contenders in this category of bikes. But I was wondering if anyone knows of any other good steel frames with 130mm rear dropouts, shifter cable mounts, and good overall versatility.
Ive also been thinking of just converting something like the Raleigh One-Way to an IGH with an Alfine and the Jtek bar-end shifers, but I can't tell whether the rear dropouts are wide enough.