I don't think the view is being created when installing om_timeslot_sheduler. I get an error when trying to go to /admin/om-timeslot-scheduler/manage/themes (that path is added in the Admin menu, so I assumed it was a usable path):

Fatal error: Call to undefined method stdClass::preview() in C:\wamp\www\hosted\seattlecommunitymedia\sites\all\modules\om_timeslot_scheduler\om_timeslot_scheduler.module on line 1326

Creating a view called om_timeslot_scheduler removes this error.

(If this gets added into the module, shouldn't Views Custom Field also become a dependency?)