I wanted to ditch the floppy umbilical but not add any weight to the gantry to preserve my input shaping. 10x15 cable chain fits all the wires. The extruder connector fits but you have to press it through. A bit fussy.
However, this mounts to the extruder on the front and has a tower for the rear. Works great. I have also included the .f3d files for fusion 360 if you wish to use 10x20 cable chain. Only the rear should need modification.
With cable chain, laying it horizontal like this would potentially set it up for long term failure. If you look at the two components, you'll see that they support the weight of the chain, specifically the rear tower. No long term stress is put on the cable chain.
The author marked this model as their own original creation.