Yes, underneath works as well. I have a suspicion it might even be better in some cases, but yet to be checked. But on top is simply easier, as you have to remember to turn it off (i.e if you are interested keep the battery alive longer). Actually what would be interesting is to check what would happen if one moves it into the P/S section, below the metal covers & just above the Transformers, for which these are actually designed...uhm...something for this weekend !
Enjoy,
Rym
Enjoy,
Rym