Does Watchtower Library for Mac conflict with CrossOver?
No. You can run both, even at the same time! No conflicts. Both Watchtower Library for Mac and CrossOver essentially work the same way. Both rely on Wine and X11. However, exactly how they get there differs. Watchtower Library for Mac uses standard X11 as used by Apple; puts the fixed-location Unix-based Wine software in a framework at /Library/Frameworks and places the floating application code in a standard Mac application bundle. The virtual Windows sub-system lives under Application Support. This layout entirely avoids clashing with CrossOver (by design).