I ended up sawzalling a few, I got in the snips because I watched the carpenter nip-nip bend snip studs in less than 10 seconds a chop. I also found they know how to make those tek screws go into the studs like a hot knife through butter....super high rpm drills.

Bet that left a nice edge....not.

I've seen I think Hilti drills that had a switch-out chuck on them for screwing into metal studs. Guess it turned the drivers faster.

Nope it leaves a perfect edge, its a bit time consuming to walk to or pick up a tool while the can snip on the fly. They use the Hilti drills and my favorite is the Hilti rivet gun.

Here's Bob Villa's spin

http://www.bobvila.com/HowTo_Library/How_to_Cut_Metal_Studs-Metal_Framing-A1739.html