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I printed four of each for a total of eight pieces so no zip ties would be needed anywhere. This should be a drop in replacement for the zip tie method. I'm pretty sure the belts will work just fine and may even have a little bit extra. You can just print 4 copies of the belt_anchor_clip_set.stl file and be all set.
The parts with the slight cutout were suggested by a fellow MPCNC builder who had pipes that stuck out past the end of his towers and there was some interference with the lower belt mounts. If you have a similar setup, you can just print two of the normal set and then two of the belt_anchor_lower_clip_set.stl