Effects of unilateral encumbrance?

How does one-sided encumbrance work with stats, attacks, and so on? Does weapon size make a difference?

If you check your stats using @ to get to the character screen, and then TAB over to the encumberance panel, you can then scroll through the impact your encumbrance is having, using the numpad.

I’m still pretty new to the game, so I double checked the key commands before posting this, and discovered that my ankle sheath brings my Left Leg up to 11, which is enough to reduce my movement by -2, and affected my dodge score.