I have the 82s, but they'll be much of a muchness I think.
Have ridden the front (aka 'rear' on my FWD lowracer) on a 200km 3AAA brevet and apart from that, the set has probably only got around a hundred miles on it.
I have a pair of ruinously expensive Vittoria Corsa Evo CX tyres on them at the moment with Jantex tape. I don't know enough about tubs really to have much confidence in them VS any other method. But then for me, I'm leading with my feet and have only 25cm to fall, so I figure if they ever break away, it won't be the end of the world.
I'm using the supplied cork pads and the braking is acceptable in the dry (probably horrific in the wet). Unfortunately my front brake shrieks abominably, perhaps because I drilled out the fork crown to get the bolt in and the tolerance isn't right, I'm not sure.
On the excellent Nazca Gaucho, the braking was solid and the bike really, really flew. It might also be an extremely fast bike in the first place, of course:
I'd speak to somebody who knows this stuff if I were you... Bicycle Works sell tubs and tape, at least?
Performance-wise I'm not really fast enough to get the most from them, it was more by the way of an impulse / ludicrous sale combination.