Just curious to know Mike, when you rock a chain with a square ground chain is it as painful to file as with a round file or does it rip metal out faster?
It will sometime go through softer nails w/o too much problem, but if you rock or metal it real well it is a PITA to get back in shape, mostly because I file by hand.
If you do the correct angles, it will hold up just as well as RS (full chisel round) and cut a bit faster. If you make the angels steeper, it will cut faster but won't hold up as long, same as when you change the angles on round file.
I almost never take my chains off the saw, I'm real careful not to "farm" with my saw, and I can square file a chain just as fast as I can round file one, so why not? I drop most of the wood I cut, so it stays clean. Usually gets cut on the spot, but if I drag a log I keep one end off the ground so it does not get covered in crap.