I'm currently using a hardwood flooring (utility grade oak) on a bench
top. It was built on top of a torsion box made with planned 2x4s and
1/2" OSB skins. The top and bottom were made the same way but with
more glue than nails on the bottom side. Of courrse, the best quality
boards were used on the top. It was only completed around this June.
It looks great, is sturdy and hard to tell its not a solid laminate.
So far the AC in the summer and humidity of early autum has not had a
effect on the bench top... The boiled linseed oil, thats for another
thread ...

I would not recommend the laminated flooring as the outer surface has
esentialy a thin layer of paper which will wear quickly on the bench.
1/4" tempered hardboard would be much better. I'm considering it for a
removeable cover when finishing.

Joe