I have a table top 1" belt sander on my bench for small sharpening and other uses. I have belts from 60 grit to 1000 grit for it, and it sees a lot of use whenever I'm in the shop.
I "rough grind" chisels to a close finish, and then stone them for the last sharpening. It's always worked best for me, and is the fastest method too. The little 1" belt sander was very inexpensive, and has many other uses also. I have a small gun room and not a lot of bench space, so tools that serve multiple uses are a priority for my use.
