It could have potential. Of course, the end user could sell other work-related items (shoes/boots, gloves, etc). The name would just be a brand.
We have a local store called Super Shoes. But they sell a bunch of other stuff, not just shoes - socks, belts, coats, purses, etc.
Problem is, not sure how good of a brand name work overalls is. 4 syllables doesn't help.
I think it would take more work/time than it's worth to find an end user. But I don't know. Assuming you do find an end user, I agree that low to mid XXX is reasonable to expect max to end user. But as I said, the problem lies how long it will take to get that buyer.
Judging from your whois info, you have exactly 1 year to get a move-on. If you can't sell it, I would drop it.