They differ in feeling. You should consider plate mounted switches will be always more rigid because the switches are hold by their bodies and bases, while PCB mounted are hold by the base and just keep in place by two pass through pins only.
Also the plate material will make a difference. If it is a metal plate the rigidity of the overall assembly, that you will actually be pushing your fingers on, will be a more firm structure.
I have a PCB mounted Poker and a plate mounted Leopold. The last feel more firm and solid, of course.
The switch type will come second, in my opinion, to the plate+switch or PCB+switch foundation. At the end the force, if you bottom down, will stop against the foundation. However if you are a soft writer that does not bottom down the difference in both will be minimal.