The instructions that came with my RS meter said the mic is designed to pick up 360degrees around the testing position. I place mine ear height in the primary listening position facing up. Sometimes I use a tripod and crouch down not to interfere with the surrounds mounted on the ceiling. Other times I sit and hold the meter up with one hand and control the remote in the other hand.
If you think about your ears, you don't turn your head and face each speaker when your watching movies or listening to music, so you really don't want to point the device at each speaker. Of course, this is just my opinion, let the bashing begin....