For a long time I would only punt in-house as it is safer and much easier to walk away if no-one floats my boat. Most privates would not allow you to just drop by and check them out without actually making a booking. However, after my last favourite parlour girl left the industry I found Tianna, who is a "private" with her own unit and have been seeing her ever since.
As for a private visiting me - no way in the world. For the most part they seem to be unreliable as to timing and as to who actually arrives and this thread here contains one worst case scenario.
Link is broken,so has been taken down
Best to stay well away from visiting only girls in my opinion.