I thought "swag" was a yea oldie terms for a collection of objects that someone has stolen. Pffft, I'm so down with the kids.
Lol consider that a good thing
Swag has a lot of definitions. This generation butchered swagger and made it "swag", lol. I can't stand hearing that word... It's a weird thing with me, lol. Same with "cray" and "yolo".
Anyway, it's true though. Compare Solas to blackwall and dorian and you can see the difference that I think attracts people.
First, Blackwall is attractive (not to everyone of course) in the way of gruff stonefaced reserved badass, but the consequence of his reservation is that he seems stiff and unconfident sometimes when someone like him should carry himself with the utmost confidence.
Look at Dorian and Solas. Dorian is very comfortable in his own skin and knows he's pretty as hell, and an excellent mage. He carries himself with confidence and it shows in all of his movement and posture. And Solas has this even more. He knows much more than other people do, he's powerful, even in his weakened state. Even with his heavy burden, he's much more sure of himself than others are. He carries himself like a man with power, to the point that when I found out he was a god, I wasn't even surprised. He indeed has swagger. He's an awkward looking guy sometimes, but his facial expressions and his posture shows that he is sure of himself. That sort of thing is what I think makes his movements so entertaining to watch.