Well since someone else already revived this thread,
I installed the factory PTO winch on my Kaiser M35 over an electric powered unit solely because I planned on using it regularly for dragging logs out of the woods. Didn't want to worry about burning up an electric motor.
I will confirm after a few months of use it is a PIA to use alone, though it is incredibly strong. I'd sure like a snatch block but haven't needed one yet. If the log I am winching gets stuck on another tree, the winch will drag my truck with all 6 wheels locked up easily. And that's with the factory aluminum shear pin.
Biggest drawback that I've noticed is not being able to see whether your line is bunching up on the drum while in the cab. And you cannot disengage the winch from the lever on the winch itself when the cable is loaded. Only explaining these details because I couldn't find them on the forum before I did the install.