The AZ puller has a collet that expands to the cam bearing. If the bearing did somehow break, there's not much chance of the rollers coming out. It's similar to this one from Harbor Freight. http://www.harborfreight.com/blind-h...ler-95987.html
Cool! Other than the bearing puller I thought there was one other tool that was needed? Or was that just a "nice to have" tool?
Cuda67bnl is right, the bearing puller/installer is all you need. The service manual mentions two other tools, a sprocket locking tool and an alignment tool to insert the cams in the cam plate, but neither are necessary. They may speed-up and simplify the process, and if you do several cam jobs a week you would probably want them, but they aren't essential.
The locking tool only locks the outer cam-chain sprockets so you can torque the flange bolts, but all you need to do is have a helper hold the the rear brake while it's in gear. I honestly don't know why you need the alignment tool, as my cams went in the cam plate without the slightest effort.
I also have the Beatty tool and it is very good. Pulling and installing the inner-bearing was a breeze, and the tool is not expensive.
The AZ one doesn't have an installer plus if the old bearing should happen to brake all the rollers wind up inside the motor, the one from mr. beatty has a capture sleeve to prevent this.
I've heard of this happening with blind-hole pullers, but not in a long time. I'm not sure how this could happen with these bearings since the needles are inside the housing and the puller would grip the housing.
For those of you who've installed bearings with the old cams, how do you know when the bearing is inserted the right depth? The Beatty tool seats it at the right depth automatically.