Idon'tchoose a location just because there are rubs or scrapes present.I choose my spots based on terian and often there does happen to be rubsand scrapes present whereI hunt.
Common ground.
But to answer the question...yes, I have observed bucks working both scrabes and rubs many times...not that I think it really matters. Oviously we know that bucks are rubbing and scraping whether we actuallyobserve them doing it or not.
Would it matter if they were doing these things at night?