Breeding roaches can be a great help and lots of fun.
I breed 5 kinds of roaches to help me cut down on my cricket cost and add a little veriaty to the diet.
I feed hissers to all my uro's. The problem with hissers is that they take a while to get to breeder size. Which means more food and more space, although you can breed enough hissers to maintain a SMALL collection. And like you said, they are strong as hell. Keep in mind that female hissers are softer then males. So you don't want to feed out most of your larger females.
Lobster roaches on the other hand make super feeders.
They breed like crazy and they are a softer bodied roach. You keep them they same way you would keep a hisser, but you get MORE then what you put in to them. Their both glass climbers, so it isn't a problem for uro's to chase them around a tank. Lobsters will burrow, but they tend to go to the top of the enclosure.
The best thing about tropical roaches it that they will not make it in most US homes. It isn't hot and humid enough for them to thrive. The only place's where you MAY be an essiue is in the south. Even then, with proper containment there shouldn't be any problems.
Best wishes and have fun with your roaches.
JC