Originally Posted by
unterhausen
Nowadays, dual brake mounting options is the province of low-end hybrids.
Do you have examples of these bikes? This dual-mounting option is also what the OP alluded to, and I'm curious to see an example and somewhat skeptical that this setup actually exists in mass production.
I scrolled a few major manufacturer websites (Trek and Giant) and it looks like the rim and disc versions of their entry-level bikes all seem to use different frames for each version, so the disc version can only run discs, the rim version can only run rim brakes, etc.