No. If you post a sign, the law applies to everybody.
Sorry I beg to differ, as I said previous the right to carry on private property (concealed or otherwise) with permission is a right exclusive and disconnected from CCL laws and restrictions, having a CCL does not mean you have less rights than others. As posted above the right to carry with permission on private property (no mention signs nullify it) was codified long before the CCL existed and that section of the UUW law still exist and still does not indicate that it's nullified when you get a CCL or if signage is posted, it's as close to black and white ambiguity in laws as you will generally see and thus under the rule of lenity has to be ruled in the most favorable way for the defendant.
Edited by Flynn, 18 May 2019 - 12:30 PM.