Darius,
This is very valuable information. Thank you very much.
I'll try to enable Direct Path I/O for 00:1d.0 - Bluetooth and IR Receiver. ESXi doesn't have drivers for these devices anyway, so I will pass them to the OS X VM. This way, if I decide to use this VM as my desktop with the monitor attached (and Direct Path I/O enabled for video), I can use my Bluetooth keyboard and Apple Magic Trackpad to control the OS X VM.
You are a treasure troth of knowledge.
Thanks again!