I'm looking to add hard bags to my Suzuki Bandit. Just got a great deal on a NIB SW-Motech quick-lock siderack kit and installed it. The idea of the Ammo cases is the right price point for me as well as the security. A new work promotion has me riding a 150 mile round trip twice a week. I can't handle my backpack for that long. Can the ammo cases swallow a laptop case decently and stand up to daily use? are there any true downsides?