The 'traditional' place for latches is the door, but there is no reason not to put them in the jam.

The powered bear claws are really expensive plus seem to take up a bit more space, especially if you have to contend with window channels. Why not just use the conventional bear claws, add some linkage and a solenoid from someone like Speedway or Rocky hinge. That way you have a multitude of directions you can go with bell cranks and links. My '31 has the mini, single rotor bear claws. There is even a solenoid in place too if I run out of other things to do with my life.

As far as an emergency release, there are several companies that sell a flex cable. These in turn are run from a fender well then through the door post to the door latch through a loom protector