Dear @jonm,
I tested with my company the GeometryGym Plug-Ins, but only by me I can´t import the IFC. I don´t have the IMPORT IFC Button and the last 3 options, how is hier to see:
In this screen the Button appear…
.
I work with Windows 11 and Rhino 8 SR11, my colleagues with Windows 10 and Rhino 8 SR6
Thanks and best regards