I owned an Omni and I say no on that one. Definitely no on the older ones with a slower extruded base, but the newer ones have gone to sintered. I found the taper unnecessary since TBT floats enough without it and it makes riding switch unnecessarily awkward.
15 LibTech TRS HP . 15 NS Snowtrooper . 15 NS Ripsaw . 13 Salomon Pow Snake
15 Now Drive . 14 Now Drive
14 Flow Hylite