Like what you like, but this is, by any definition not a gimmick. This is a movement. The way rap is being made is changing through what these guys are doing. It's like a whole aesthetic that is being adopted. It isn't just what they are doing and the rappers directly affiliated with them, that whole stripped down gutter sound is becoming more popular with many more artists.
Specifically to Conway, his flow is just so smooth on this album especially. I LOVE Gibbs, and probably consider him a better rapper than Conway, but I enjoy From a King to a God much more than Alfredo(and I love Alfredo).