I actually go the exact opposite. Unless I am doing torch welding/cutting... its wood tables all the way. I usually like my welding table to be at least 6' wide by 24' long. Standard 2x4 construction with 3/4" OSB top. Over the OSB goes 1/4" maso. This allow you to place jig blocks on the table to hold things in place and to easily make duplicate pieces. Usually I can get 3 or 4 shows out of a sheet of maso.
Yes, its the Yalie way to weld, but it works for me.
The reason I use all metal for a welding area is you can attach the ground low, out of the way and weld anywhere on the table.