I don't understand the problem. There is no "P&I or P or I, pick one set". You have both P&I, and they cannot screw with your P or your I. Game over.
P or I are mentioned using the conjunction 'or' because to use the conjunction 'and' would have disastrous impact on our rights.
No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States....
If the conjunction 'or' was not used, and instead 'and' was used, then the states could
make / enforce laws which abridged privileges or immunities, as long as they didn't abridge both.
I do not understand the confusion. No legal entity (to my knowledge) thinks the 14th is supposed to supplant or modify Article 4 Sec 2. The only issue I know of is the same one Gura complains about -- our P and our I are not properly respected.