On a related note, there's a cross-platform Common Lisp package, "Bike" https://github.com/Lovesan/bike, that lets you use .Net assemblies from Common Lisp.
I've used it a tiny bit at work (on Windows) and at home (on Linux), and ran into one issue with "out" parameters, but otherwise it works really well.
That's just crazy! (in a good way) I've been in software since 1998 and it's like I've just uncovered a whole new world.