Unprintable? I don't think so!
I cleaned up mifga's model and printed it upside-down! It's hard to print, it get's easily knocked over while printing, but it's doable!
A bit late, but now I also have a contribution to the gangsta meme on thingiverse :-)
Use the "upsidedown" stl for printing. It has the head ... emm, block aligned to the print bed.