Had one of these on the truck that belonged to the boss when I
was in the trade. My partner used it all the time, I found
that when cutting only a few holes, by the time he ran the
colds and such, it was dang near as fast to use the hand
tools.
http://www.boschtools.com/Products/Tools/Pages/BoschProductDetail.aspx?pid=1500c
The drill motors converted to shears always seemed kind of
clumsy to me. Might be ok for a straight cut but the geometry
always felt off when cutting shapes.

dg

Denny G
Sandwich, IL