Yes, mounting the lock on the jam will not change the functionality of the Magnalock.
We offer a series of "Z" brackets for this requirement. Typically you can face mount (use the "F" suffix lock, for example: M62F) the Magnalock above the door on the header. On the door mount the "Z" bracket (such as the Z-62CL) and then mount the strike plate to the "Z" bracket.
No, the only finish on our Magnalocks is the standard satin stainless steel finish. However, we do offer a series of dress covers that meet most requirements. The dress cover will cover the entire assembly providing the desired finished appearance and as an added bonus it provides additional tamper resistance to the lock. Available finishes include BK-Black Anodized (example: DC-62BK), BP-Brass Polished (example: DC-62BP), CL-Clear Anodized (example: DC-62CL) and SP-Stainless Polished (example: DC-62SP.)
Possibly, using two individual locks is certainly an option. Another option is to have two Magnalocks in a single housing such as the DM62. A third option with a double door (assuming that there is no center mullion) could be to use one magnet mounted in the middle of the jam with a split strike option. One split strike plate would mount to each door. An example would be the M62-SS which is a M62 Magnalock with a split strike. Be advised that you will have something less than half of the rated holding power of a given lock on each door leaf. For example the M62 has 1,200 lb. holding force, but with a split strike each door will have something slightly less than the expected 600 pound holding force due to the smaller strike surface area.
Yes, by adding the Senstat (SC) option (example M62SC) to the Magnalock you will get a lock with an output that confirms the lock is secure. This feature confirms that the door is closed and locked.
Every application will have different requirements, but in general the following guide should help.