What Videoman said is true...I used to have the A1p and when I mount longer shotgun mic like the ME66, the mic will be in shot.
The A1p's mount is at a fixed height, so not much room for height adjustment unless you opt for 3rd party mountings.
When you mount your microphone higher, you may not get an optimal pickup especially if you are filming people's conversation at eye level....a raised mount will pickup sound from the top of the head. Not very efficient.