Looks pricey, and would require different blade/heads for each conductor.
Personally, for all types of wire I just use a linemans knife if I can find it in the mess in the front of the van. Or a utility knife... Score shallow grove around the insulation of the conductor, than slash the rest legth-wise, and peel like a bannana. With some practice the knife never touches the conductor, and just as fast maybe. But then again, I am not doing it all day long either, if I were doing line work I might think a fancy ergo tool would be a wrist saver.
"Well - I oughta....." -Jackie Gleason