Oh, I had try it but don't really play it, but I have encountered a lot of SM, with variations specially on Golds and Silvers.
The staples for the deck seem to be, for golds, Iorveth and Ithlinne. Most of them, from my experience, play Isemgrin with Toruviel, BCM commandos and Ailerenn for tempo. Saskia for mulligan, too.
Others run Royal Decree and Renew with Iorveth.
I've seen Muzzle, Blue dream, and Gold weather a lot too.
Silvers, I see a lot of ADC (I think they mulligan a very buffed SM last round and draw it again), sometimes Morenn, Roach for tempo (specially with Ithlinne), Toru, Ciaran, Decoy, some buffed Hattoris...
And Bronzes, apart from the obvious, I've seen a lot of pleople run instead of Farseers, BCM for tempo, or more removal oriented units.