Pennsylvania has license reciprocity with Kentucky, so you can conceal carry here. As for open carry, not license is required, but you are required to have a license to transport it in your car. How you transport it in your car while in Pennsylvania, as long as you have a license, is your business. You can have it stored in the truck, totally disassembled, you can have it in your glove box (who uses glove boxes for gloves any more?), you can have it somewhere on your person, or in a holster on the door, or even super-glued to the vehicle's roof.
We have no open carry laws. Since open carry is not prohibited by law, it's "permitted" by default. And, whether you're carry a black powder pistol or smokeless powder pistol, or revolver, is up to you.
The same federal rules that apply in Kentucky concerning national parks apply in Pennsylvania, which means that walking around and camping around is not restricted. Apart from the federal crap, the only places you can't carry in Pennsylvania are on school grounds (K-12) and court facilities.