best not to risk storing the shit in res. All it takes is one report and it'll get you into all sorts of trouble, whether it be a friend that sells you out or an over curious, paranoid resident.
Offsite would be my advice. Out of sight, out of mind, no temptation to bring them out, no gear to be seen by susie soccer mom wannabes, etc.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.