I have Browning Strike Force cams and use python locks. I figure a camera is just too easy to steal and hike out. The only cameras I've had stolen are ones that are not locked. One time I had a camera that was locked and they tried to twist it off the tree. Had it not been for the lock, it was surely gone. I realize someone could come back with bolt cutters, but I try to avoid the 'crimes of opportunity'. Aka some random dude walking through my farm who likely will never set foot on it again. I figure they would be too lazy to go get bolt cutters and come back.
Also, I purposely don't lock the SD card compartment. If someone is caught trespassing on the camera, I figure they might just take the card instead of coming back to cut the lock off and steal the entire camera. I have one neighbor who has had several cards stolen, but they leave the unlocked cam. He has people sneaking on his place to fish. By not having the card compartment locked, I think it saved his cams.