Yup, I even welded a tab to the right hand side especially to take the earth clamp Means the whole bench, and the vice is then earthed, great for holding components and sticking them together.
It doesn't really rust to be fair, except when you spill brake cleaner on it, but then a quick wipe with gear oil and it's back to it's lovely patinated self again
One thing, I put a return on the front edge of the sheet (well local engineering firm did) which means the front of the bench is also steel, gives a less-sharp edge, but also useful for beating stuff against occasionally.
Paint chips and gets lodged in critical components, I wouldn't want it on my bench personally