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.
15 NS Ripsaw . 14 NS Proto HD . 14 NS Cobra . 13 Gnu Space Case EC2 . 2013 Salomon Pow Snake
14 Now Drive . 13 Now IPO
14 Flow Hylite