Mules can handle uber distortion very well too, the main thing i would advice SM's for is that mules have the tendency to be a bit too thin i a light guitar, at least mine are.
Anyway for superb projective pickups and versatility in styles just take the mules and try them in different guitars.
I've been watching this thread wondering how to say what I need to say - and now Henk's said it :D
I love my Mules now, but they're in a different guitar than they were bought for. They didn't sound quite like I was expecting in the original, an Epi LP. Accoustically, it has a quite a nice bright ringing tone, and the Mules took that and produced something I wasn't looking for. They're in a nice fat sounding Tokai now, and the bite that the Mule bridge has seems to make more sense for me in there.
From the references you're making, I suspect that Stormies is what you want, but I've no actual experience of them.
I even wonder whether Riff Raffs might be another option? They do the late 70s early 80s "rock/blues/early-metal" thing really well, and I've used them jamming along with the Beano... :)
Also, when I first got them, RRs sounded much more like what I imagined a high-end "classic" vintage humbucker ought to sound like. In time I've learnt to love the Mules more than the Riff Raffs, but they took some getting used to for me.
I think it's "listen to your guitar accoustically, and then ask Tim at BKP..." on this one :D