I'm after hard numbers here, not woolly descriptions. Of course it will vary with riding conditions, but I can extrapolate from numbers and not vague words.
I always use sintered pads in the BB5s on my tourer and I'm very happy with them (I ride a lot of steep narrow roads that require descending on the brakes, sometimes laden). My main wheelset is 6-bolt, but I've got a spare set that's centerlock. I could only find stock of tourney rotors, which say "resin only".
I've reluctantly ordered some resin pads, but they might not come in time for when I need to use the front wheel. Anyway, it's only my spare wheelset, and I'd probably never wear out the rotors if they were properly hardened. I'd rather not have to keep track of changing pads when I change wheels.
I've seen mentions of "less hardened" steel, but even if it wears 50% faster, that's no big deal and ordering the resin pads was a waste. If it wears 10x faster, that becomes a safety issue as I'm expecting to use the spare wheels for a good few hundred km while my dynamo hub is being serviced.
So has anyone quantified the extra wear using sintered pads on resin-only rotors as compared to universal rotors?