So I got the swing arm bag, and I gotta say...I like it. I used the included straps and just wrapped it around the frame below the seat, at first I used cable ties but they were too thick and the seat wouldn't click to a close. When I sit on the bike my left sits on it, but it's not uncomfortable, and when my feet are up, I don't feel it at all. I went over bumps, the highway, and all was well. There's only a slight pinch on my leg when I move the bike backwards, but it's not a lot. It's super close to the upper part of the exhaust, but its not touching, but it does get hot. The items in the bag were warm, but I don't keep electronics in there, only gloves, bungee net, locks, etc. The bag I got was this:
But I may return it and get this:
Amazon is very generous when it comes to returning items.
The bag I got give just a tad bit more of the "muscle" look, especially with the D-Rings I have under the rear seat.
I'll ride with this setup for a couple of days and let you know how it feels in the long run.