Steve, the pics in my build log should help as my doors are RCR and am using the mini bear claw latches. It was a debate in my mind whether to mount the latch inside the door or on the outside of the rear face. My debate was settled by the close proximity of the latch to the spider flange and seal if it were mounted on the surface and mounting inside the pocket was preferred to making all those connections easier and less complicated.
To answer your question, yes I would think almost all folks are using some type of return spring as the latch itself doesn’t provide any features to enable this.
Devin