I have one and it’s awesome. You also don’t have to worry about someone snatching items out of the bed.
The biggest downsides are (1) I’m reluctant to put anything gross back there (vs throwing a trash bag in the bed like I used to with my truck), and (2) people see a van, assume you’ll drive obnoxiously slowly, and preemptively cut you off in traffic lest they get stuck behind you.
