Both Log4OM and WSJT-X are set to use OmniRig.
GridTracker is unaware of the rig as far as i know.
Omni-Rig is bundled with WSJT-X and will be started automatically by WSJT-X. I assume WSJT-X handles that it's started up with the correct user privileges. No known issues between WSJT-X, OmniRig and the actual rig connected by a COM port set in OmniRig only.
Log4OM tracks the rigs frequency etc perfectly fine which it wouldn't if I had chosen the com port directly (it would be exclusively opened by OmniRig).