I've owned Ions last season and Imperials the season for that--fit is exactly the same. I haven't tried on others like the Ambush and Moto, but based on appearance and handling them, I would venture a guess that they are about the same too.
16 Gnu Swallow Tail Carver . 16 NS West . 15 NS Snowtrooper BIA
15 Now Drive . 14 Burton Genesis
14 Flow Hylite