CLAIM: Open carry not permitted if possessing LTCF

[RayDiffraction]

I'm not a PA LTCF holder...yet, but I was told something that didn't make sense. I stopped in a PA gun shop to pick up my Glock 43 and struck up a conversation with the owner who is a certified USCCA instructor. He told me that it's unlawful in PA to open carry if I'm a LTCF holder. I thought he was pulling my leg, but he was serious. I told him it didn't make sense, but we all know that there can be quirks in the law and especially gun laws.

So I checked here at our friendly PAFOA forum and found one relevant discussion:
CAn you open carry after being licensed to carry concealed?

It seems from that discussion that the claim of open carry for LTCF holders being illegal is nonsense, but the claim seems to reappear from time to time. Has anyone been able to get solid information from someone in a relevant position of authority as to what is permitted and a precise statement of what law governs this particular issue?