The Q's answer needs a little elaboration.
If I didn't have a CPL, I would refrain from any IWB whatsoever, for the reason he stated.
I also like to oftentimes carry one of my many my stainless1911 pistols "mexican". But because of the problem associated with this possibly being considered "concealed carry", I have a holster in my vehicle got use whenever I want to open carry in a "Concealed Pistol Free Zone".
Otherwise, with a CPL, it doesn't matter how much of the pistol is showing or is concealed.