SRD said:
- If your off-hand weapon is light, the penalties are reduced by 2 each. (An unarmed strike is always considered light.)
Also, I know there's no link with the first question, but is there any point at all in taking a set of explorer's outfit instead of, say, cold weather outfits?
You might find the Einhander Feat from PH2 interesting to look at.Longsword-but-not-with-a-shield-so-I-get-a-free-hand-in-combat
Wasn't it a rather poor feat?