I like simpleness of #7 and the fact that the A with the triangle by itself can eventually be used instead of the full logo. The problem is it being an A which would not have any relationship with Sway.
On the other hand, on entry #6, the graphical piece is an S, so if taken apart from the full length logo it is still the initial, so it works! I like this one a lot as well but for some reason I like #7 better in general.
I like #9 too, but I feel like I've seen it before.