If you don't have a CDL, you can get in some trouble for not having it in PA pulling a trailer with a GVW over 10k lbs since you are a PA resident. Commercial/Non-commercial does not matter. There have been cases recently where an F350 pulling an equipment trailer with a GVW over 10k lbs got into trouble for not having a CDL. Was for private use. Owner was then denied the ability to take CDL test (class A) with same setup. Eventually, after attorneys entered the picture, the gentlemen was permitted to take his test in that same rig. There are several, that I know of, cases just like this.
I'm intending to call PennDOT tomorrow about this issue. There is too much confusion right now regarding CDL's in PA and no one has an answer that seems to be 100% accurate. Even PennDOT personnel. Go figure.
Just an FYI