Pros
If you have a very sales/pushy personality you can make a ton of money. If you don't, you will get screwed over when I comes to money. It's a business risk. If you think that's you, you can do great. If you don't see yourself being able to be pushy, don't do it.
Cons
The regionals pretend like they have your back, but if you don't make it with sales, they will stab you in the back, no pity. That was me. Don't let them read the contract to you--make sure you personally take time to read the whole thing. (I.e. I didn't know they cut your commission in half if you don't get a hundred sales). Just be careful of their sweet talking. It can be a great opportunity, and it could be something that screws you over. You just need to do a personal evaluation.