Initially I assumed that I would have to have one PC or follower NPC be a rogue with lock-picking skills, just for the locks and such (like in DA:O), but apparently that's not the case.
I like having three ways to open locks though. The older TES games let the fighters bash locks, mages use 'Open' spells and rogue pick locks. (Now in Skyrim everyone is a master lock-picker. Have to say I liked the old way better.)
I am not playing the beta, but I am wondering just how much damage a metal weapon takes when lock bashing. I recall in TES-II it was quite a bit and I had to carry around some cheap maces and such just for bashing locks. But seriously a well made war hammer shouldn't have a problem breaking a lock.