I was hired as a C# dev out of college. 6 months in, a legacy Delphi app was dropped in my lap for maintenance. It took me about a month to get up to speed, but after that it was just another platform/language.
I wouldn't expect them to want to though. Not because it's a terrible language to program in, just because it's not going to look as good on a resume for later jobs.
And that’s the sad part of HR departments hiring by checklist, we develop a monoculture which makes it harder to actually see different ways of solving problems or creates a reinventing the wheel syndrome. There are professions that value people with a range of experience. It is really too bad that software development often isn’t one of them.
Wow. Is this actually a major concern with some people?
Around D.C., there's this tendency for employers to be very open with what languages you've used before.
Have you only used Ada? Welcome on-board, though we have no uniforms here.
Only used Erlang? Are you guys still saying you can see the whitehouse from your building?
And for some reason C#/Java are considered almost the same language, depending on whom you talk to.
Honestly, good people are good, and we don't have enough of them to become picky about demanding 5+ years experience in exactly what you are already doing. It'll take a month to onboard someone regardless of if they've used the language or not before.
My main concern would be whether you can continue to activate it if Embarcadero drops support or goes out of business.