Very. Especially if you feel like screwing and unscrewing multiple door hinges in a given night.

[ It's like he's speaking from experience or something. Once he's got the machete he quick sets to work, which in reality doesn't look like much more than pointing the sonic screwdriver at the machete and pushing a couple of buttons here and there. Several minutes pass but he looks satisfied with it as he hands it back to her. ]

Give it a little test slash. We might have to adjust the frequency.