I do a lot of stuff on that slab. Tooling, edging, using the compass to mark borders and stitch lines, and drawing. Anything else, and I put down a cutting board, or move it to the plywood.
The only issue I have, is tooling on small pieces. A small 9mm holster, tongue and buckle ends, stuff like that. Trying to walk the bevel along a border, for example, I have to keep moving the piece back into place. I'm tempted to lay down some flypaper!