It's entirely possible. Most of the folks here appear to be running either a Merc derivative or something custom. The closes I ever came to having anything to do with a CircleMUD was on Crystal Shard when the coders decided to blend some Circle stuff in with the Sillymud code.
BTW, if you have some stuff for Circle, we're still more than happy to have it in the repository. Pretty much all of our Circle stuff came from ftp.game.org when we seeded the repository.
If I were to sit down ad sort through all the crap I've got littered all over the place, I could probably find a couple circle bases and a few derivs. But that's assuming I find the time and patience to sort through the 83 complete bases I have, make sure they're all compilable, and all that other BS.
Then again, I can see why more people use the other codebases, I probably would as well if I was able to somehow get DG Scripts to work on another codebase…progs are just much more cumbersome and nowhere near as flexible.
There's a snippet here on MudBytes for a scriting system for Smaug. I haven't played with it, or even looked at it yet, so I couldn't tell you if it's anything like DG Scripting, but it's there. And may be worth checking out.
Lyonnese, is a circle/rom mix mud, i believe anyways, think i got the name right, have it sitting around somewhere, but, yeah, circle/rom mix, complete with dg-scripts.
as for how to get dg scripts into a rom, its easy, take the time todo the research into what the different flags and pointers are, and change them to the appropriate ones inwhich rom has. as for the editors themselves, that is entirely up to you, as they are embedded into the oasis system lasttime i checked, so you'd proboly have to rewrite the editing commands to fit in with your rom olc.