Olddaze, there is a big difference between the wood burning stove and a pellet/corn stove. To my knowledge there is no such thing as a power vent on a wood burning stove. They rely on sufficient heat loss up the stack to clear creosote, and since their stacks are vertical with minor bends they usually have little soot to clean. I assume the blower on your buddy's stove is the room blower. These can vary in strength depending on model and manufacturer.
The combustion blower on the pellet/corn stove is totally different. Properly engineered, they change speed with different heat settings to provide better combustion and less heat loss out the stack. All power vent stoves have soot accumulations eventually. Speed up the blower to blast soot out, and so goes your heat with it. Chances are you wouldn't be able to maintain a burn. This actually happened to me. My first furnace was US Stove which I bought about six years ago, and it went back to the store within a week of buying it. Either the draft blower was too strong or it leaked air, but what it would do is burn the initial fuel quickly on startup and then flood the pot. Even with the factory's help, the draft couldn't be cut to continue the burn, so it went back to the store and sat right next to another returned model. I figured at that time US Stove hadn't worked the bugs out of it.
After that I bought AES magnum line, a furnace and their baby stove. I did have trouble with the baby combustion blower slowing down and not even starting at times. Soot did accumulate, but it wasn't the soot that was the problem; it was the motor bearings dried out. I took the motor apart and reoiled the bearings and resolved the problem.
The bearings were non oilable bushings. and I agree with you they should be ball bearings. Good luck finding them on a stove. I no longer have the baby stove, but had I kept it, I would have made my own oilers somehow, probably with hobby shop tubing.
For soot accumulation, Tallcorn is right about the leaf blower. I bought a Toro electric just for that purpose, since it comes with a pickup tube that you can adapt with a plumbing fitting to go right on the exhaust. For every day soot maintenence, try tapping the exhaust chamber lightly with a tool. It can knock loose soot down before it bridges.