I'm also curious if Irrlicht can (or will) be able to use any file format that Blender can work with, and especially if anyone has any experience in doing so...?
At first glance, I don't see any matches, but I might be mistaken.
I don't know blender very good, but I've heard there will be a .x file exporter for blender soon. You can use Blender with Irrlicht 0.5 then (once it's released) very easily.