I was playing the Armor Storm Soldier in this group and had a lot of fun with it. There's a lot of competition for that third action and that's mostly a good thing - the feats that modify area attacks or give a follow up were a nice way to mix things up turn to turn. I did have some trouble justifying getting into position to get full effect from Armor Storm, but some of that comes down to inexperience, party composition, and encounter layout.