I too do not like the idea of being locked inside. That is one reason why I will try to add an egress window. When I recently spent some time with a CT dealer we talked about being locked in . I will for sure have a RV lock added and when I inquired about added the typical trailer door mechanism lock (cam bar lock),
http://www.ebay.com/itm/36-CAM-BAR-encl ... 1235687456
the salesman told me that even with a this type of lock, he could break in. All he needed was a big set of bolt cutters. I do not know if meant he could cut the paddle lock or the mechanism itself. I left thinking it was the mechanism itself, but that seemed a little of a stretch to me.
So going with the old adage that if someone wants in, "they WILL get in", I will order my trailer w/o the cam lock and get just the RV lock. Not only does it look better but it takes away the threat of being lock in by a "jokester".