"I hang drywall regularly flipping houses. As far as gyp board application is concerned, this tool seems pretty cumbersome, especially if wearing the backpack. Most of the cutting is done with the sheets resting horizontally on the wall. Need to be able to cut all the way to the edge of a sheet to the floor. Base plate appears to be in the way of that. The balance of cuts are made while a sheet is hanging and then using a stud as a cutting guide for the blade. A quick swipe with the razor knife and its done. Doubt this tool would be faster than that. Tool looks too big to fit in your tool belt even if someone wanted to carry around the extra weight. Have to set it down and pick it up a lot. Maybe useful for receptacles if you could run the blase along the box without cutting into the box like a Rotozip but wouldn't be any better than a Rotozip. Wouldn't recommend for hanging drywall. If it could plunge cut 3"  it would be very useful for cutting the notches out of the 6x6 posts when I build decks. That would be specialty tool that I could use."