if you can wait for a lengthy period of time,
I'll have an mdl0 exporter for blender...
the importers about 70% finished (excluding the debugger and logger)
the exporter only works for mdl0 vert exports
I have my own method for vert editing,
but it's kinda complicated...
but yea...
do ya think you can wait??
I've got 3 exports I'm wanting to do as well,
(meaning I need to finish this)
the best I could give you right now would be just to export your sketchup as dae (collada)
import that into blender, and wait for my exporter
note:
you must have a working model before you export(meaning it must be fully rigged, grouped, textured, etc...)
it's a very tedious process, but well worth it in the end
I may be able to help if you need it