I cut them on a tablesaw all the time. If I have a cabinet guy make trims he runs pieces through a planer to the perfect height. I haven't bought a planer yet but would like one.
I wonder how many installers have an edger on the truck. OSB type floors I alway sand the joints as they expand with the glue they use on the floor joist. Lately been seeing 20 year old floors squeaking from the cheap construction glue they used.