I mentioned this before: I always mount the grinder and two Wolverine bases on a square of 3/4" plywood. This keeps everything aligned and lets me move the setup around on the bench, to a new bench, to the car to take to a demo/class, or to give an entire sharpening setup to a student/friend setting up a new shop. If you fasten everything to a bench and want to move it, have to redo everything.
You might be able to see the fronts of the two plywood bases under two bench grinders, three wolverine bases in use, all simply sitting on a stainless steel utility table. Could be clamped but no need.
View attachment 79638
I like to have the grinder axis at about the same comfortable height as the lathe axis. Some of the same motions with hands and arms can be used for both.
JKJ