Title says it all. I think it would be useful, and would use it if it was available. Don't really see why all classes don't have access to it anyway. Comes at a rather steep cost with little benefit, but with how I play my medic I would get a lot out of it. >?!
Don't think I'd ever pick it over nanoweave, honestly. So many survived BASR headshots. So many QQing infiltrators. Their rage is delicious. It's nice being able to take that much more damage so you can live to pick the rest of your squad back up too.