I have very little experience with them but I will share it and give my perspective on them. I hunted behind a very nice female, that a buddy of mine had. She had a nice build, good size but not too big, and caught very well on the hand full of hogs I saw her on. Its worth mentioning that she was a young gyp at the time. What impressed me the most about her was how easy she handled. Much better than anything I've ever seen from a Pit. She was very easy to lead, and quiet. No huffing and puffing and heavy panting even in warm weather. That gyp ended up changing hands to a member of this board I think it was mattaggie and from what I gather made a heck of a nice solid catch dog.
If I were to own a catch dog I would not care what breed, but It would have to be one that was easy handling like she was, because I will not tolerate a hammer headed dog pulling on the lead. Not to mention I would just as soon not listen to heavy panting every time it gets over 70 degrees. A big downside to me with dogos, is the price they fetch. I would never pay that for a catch dog even If I had millions in he bank. But If someone were to give me a free one that handled well, then I'm all in.

I won't hold my breath.
Waylon