Wildseyed X-Carriage for Mendel Prusa

This is a light weight X-carriage for. It should work with any X-carriage using LM8UU Bearings, and smooth rods at 50mm centers. It prints standing up on the bed, so the bearing clips are much more durable than those of carriages that print flat.
If I can get some comments from those of you who are trying this out, I'll consider this no longer a WIP. Thanks.