"something come something", or foo-come-bar

Is the bold construct below valid? Does it have a name? What sort of punctuation would you use for it?

Fnord, the something-come-such-and-so, was under development for a year or so. It suffered a redesign late last year to satisfy changing customer demands. We had a something on hand; customers wanted such-and-so.

I swear I’ve heard or read this construction before. It falls on my ear as old fashioned (dare I say “vintage”?), though not quite archaic.