When I did band instrument repair, the guy I apprenticed with called gig bags "repairman's friend." YMMV, but for my money I'd rather lug a few extra pounds than risk even a cheap bass getting stepped on, dropped or otherwise impacted. At least for BG. For DB, it's a gig bag ever time because I haven't invested the requisite fortune in a case.
about your gear a gig bag is fine..