All soft covers could be vandalized, broken into, etc. But I find that you don't have any problems since they can't see what is under it. "out of sight..out of mind" seems to work well for theft deterrent. Pretty much all of them are designed to be somewhat difficult to break into and all of them should hold up well to the weight of snow, etc.

I went with Truxedo on a recommendation of a dealer and have been very happy. The new Truxedo Lo Pro QT that I have on my F250 can be completely removed (I mean the cover, the rails on the side, everything) in about 5 minutes. The cover itself removes in seconds but is very secure when closed and in place. I get very little movement at 70MPH when closed so it goes on nice and tight.