Dungeon Chests

Thought I would train Engineering so I could open some of the locked chests I encounter in dungeons with my team vs passing them by. Small Seaforium Charge seemed like it would do the trick from what i found online. It didn't work for me in Stockades. I'm guessing that ability for the charges was either enabled in a later patch or Blacksmith Skeleton keys need to be used. Anyone have any experience yet with the dungeons chests opening without a Rogue?

Blacksmith skeleton keys from blacksmithing is what I’ve been using in stockades.

Thanks South.