Thanks for the video. Its surprising how many reloaders are unaware of the Super Swage. I have Super Swage and would never go back to another method of crimp removal.
In addition to the disadvantages of using a chamfer tool (powered or handheld) that you mention in the video, it is very hard to be consistent using a handheld tool. Its OK if you are just doing a few of them but I find its easy to lose my concentration when I'm processing a large amount of brass. A moments inattention and I've gone too deep or gone in at an angle and removed more material than I wanted to. Not only that, by the time you hit about 200 rounds, your hand is starting to cramp and your wrist starts aching from holding the cartridge tight against the spinning drill.
I find the Super Swage is fast and consistent. As mentioned in the video, it really requires very little effort to operate.