What is the bottom line on this?
What is the difference btw (2 hands of 5 units) vs (1 hand of 10 units)?
The variance should reduce based on not putting all your exposure on one result. Expected value should stay about the same, although it may dip slightly for eroding the advantageous deck.
If the pit doesn't care either way, is multiple hands better for the player (in advantageous counts)?