Kind of depends on how thick the top is, and if you are beating on it with a 10 pound hammer.
I made mine with a 2 inch over hang on one side and 1.5 on the other, this was to allow using clamps to hold things while welding. While I will also tac/spot weld things to the table, it makes for extra clean up which may not be easily possible with larger, heavier projects on the table.
As my table top is only 1/4 inch and I don't plan on using anything bigger then 1lb. hammer, lightly on it. Ridgeity, is not great with this much over hang and thickness, but it's what I had. The legs weigh more then the top, 2X2 Sq.tube, 3/16 wall and the frame work give it some heft.
Nearly have the old leg vise all mounted with a receiver hitch setup mounted vertical so I can put my pipe chain vise on when needed. May put another receiver on/in to allow both to be mounted at same time, but as the top is only 2ftX4ft. it's a bit small.
Can foresee may need a hoist to remove the leg vise in the future.
May put a few holes in the top in the future, never had any in other tables, so not sure, and the other tables were much bigger and thicker. Though even they had at least 1.5 inch over hang.
Sometimes miss a 4ft.X8ft. table with a 1inch top, sometimes not.