So, I found an eternium two handed sword +18 6d5 +18 in DF and I've been using it to terrifying effect (also found a GoGS so I can easily kick corrosive monsters to death - no weapon change for this guy!)

I'm concerned about long term damage potential. The PC is level 18 now and I'm wondering if switching over to bare handed in the near future would result in higher end game damage potential. I've sworn not to scum with this guy, and I'd rather not have to retreat from lower levels at some point to work on my bare handed weapon marks.