There are people using HP5+ and pyro. I really like Tri-x in pyro. I usually use PMK for 4x5" and smaller (negs to be enlarged) and ABC for 8x10" and larger (negs to be contact printed).
You might do best with Rollo Pyro or ABC+ for drum processing, since the drum agitation will oxidize the developer faster and there is going to be less solution per sheet that way, so you could run into capacity problems. If you want to use PMK in a drum and you find you are not getting enough density, one approach I've heard of is to use two developer baths, so one bath for half the total recommended development time, dump, and a second bath for the second half of the time.