I have the backcountry Mosko Moto panniers, Mosko Moto duffel bag and their tank bag. Really like the support they give and the bulletproof material they use on their stuff. I transferred them from my KLR to my AT. It's all well thought out by riders who ride themselves in the backwoods, foreign countries and wherever the rode or adventure will take them. Even if you don't buy anything their website has lots of interesting information on their travels. I'm not sponsored or work for them, just really like their stuff.
For my purposes these are currently the only viable option available. The primary reason I ride a motorcycle rather than drive a car is to avoid as much as possible coming to a full stop in traffic queues. Luggage that is wider than the handlebars is, in my opinion a daft idea. When filtering (lane splitting) I need to be confident that if the bikes handlebars/mirrors will fit through a gap, the rest of the bike will follow. Too often I have ridden past ADV bikes which are stuck in a queue solely due to the width of the panniers.I bought the Honda factory hard bags. So far these bags have worked perfectly. 42,000 miles with no problems