Try it, and report back.
I'd love to read a nice , good comparsion .
Althou exists pneumatic minidrills, googling only came up with engraving drills... not terribly extensive either, 100$ or such.
Still, a dremel is cheaper. But for more complex work (engraving, as an example), i still find the dremel a bit clumbsy, it's heavier than it should for that type for work and it tends to jump a bit at higher rpm's.
My father recommended a
flexible drill extension with a drill head. Haven't seen one on sale ... ever, but it sounds pretty good .