Ahhh Derek beat me to it, I rather suspected he would. Since I really don't have any pictures of workholding, I'd have had to spend a much longer time typing it out. One of the things I was going to point out was that for rough cross cuts you have the vise to your right, and so your offhand is capable of holding the offcut. This is also true for machinist vises IMO, if you mount it on the left side it'll swivel so that the jaws are off the bench (instead of over the bench).
The other thing I was going to mention is that my current bench has a full width end vise. I really wish I hadn't done that. It's turned out to be so much less useful than I thought, so much so it's hardly used and I have just figured out easier ways to hold for things like planing (where Derek is using two dogs above).
~mike
happy in my mud hut