I took the statement by the original creator that he wanted it to be easily removable form the wall one step further and made it two separate parts. The cup mounts to the HSW securely, and the holder sits in it and can easily be picked up because of the knurled rim.
This was created from scratch using @JoshuaVenter_4351 idea in TinkerCAD.
I printed this on a Bambu X1 Carbon in PETG and did not need supports for either piece.
The author remixed this model.