The Omni is a budget version of the Undisputed. Only difference is the Omni doesn't have carbon and it comes in a lot more/smaller sizes.
The taper is practically non-existant on the Omni and doesn't affect me at all switch. Only reason I, personally, would say no to even the sintered Omni is the stiffness isn't really there for a hardcore pow board (I also don't like the "back seat" insert setup because it steals the next insert option). Over all, as an all mtn board, it could be pretty cool...but it's definitely leaning toward off-piste and deeper snow.