I've done it as well. Anytime I have to remove the clutch assembly then reinstall it because of something else (i.e. ream main etc.), I've scuffed up the surfaces of the plate, disk, and flywheel.
After that, normal operation of the clutch will, "reseat" it all.
I can't say whether this extends the life of the clutch or make claims that heads above not doing it but what I can say is that I've never had a reinstalled clutch, squeel, chatter, squeek, or otherwise act stupid when put back into service.