I have used one for ages on my FZ1 and it fits well on the rear seat of my FJR. I just used a cargo net to hold it down but I'm going to sort the straps out tomorrow when I get to clen the bike. I have only had it a week. These bags hold a lot of gear and hold up well as i forgot to attach it to the side bags one day and it came off at 50mph with just a few scratches.
Yep. It's great for commuting with the laptop. It barely fits the Dell 15". Won't fit my Samsung 15" laptop. It's got a few pockets in the "lid". Only have had it for about 3months, but it seems sturdy enough.