correct on the road 3 and power 3 tire types.
they are stock sizes I believe. 120/70zr17 front and 180/55zr17 rear
this is what the front tire looks like currently.
I would be asking LDH to opine on this combination.
My understanding is that the PR3 is a touring oriented tire with excellent low temp wet grip.
As such, in addition it will have profile and carcass design consistent with non serious sport use.
The PP3 on the other hand, is a serious sports oriented tire, suitable for track days.
As such, in addition it will have profile and carcass design consistent for such intended use.
Said profile and carcass design will not be the same as the PR3.
Obviously the tread compound and tread pattern are different.
Very odd to me is putting a tour-ie tire on the front and a sporty on the back.
If anything, the order should be reversed. ("softer" front re cooler running fronts to balance out a "harder" rear running stickier because of greater rear tire heat)
Anyway, if the tires are in good shape, of the correct size, and you're running pressures of this world, as in the 32/35 you mentioned, then my guess, and I must stress the word guess, is that for normal road riding there is no dangerous mismatch.
My guess is that you might "feel" something from the mix, but that's about it.
Don't repeat it though, when it comes time to change tires.
Keep the front and rear common, aside from size!