For the CAN DO amalgam there - Yes🙂 in theory and in tests yes.
But for the should you - not that sure 🙂 coz your patient will prefer composite there. 😉
The thing to consider about MO on mand.1st premolar is the pulpal floor and the access to it. Remember you have to have the plane a bit tilted lingually not to cut into the pulp horns 😉 Hope it helps.