I am curious if anyone out there is currently using Mirage Omnisat's as surrounds in combination with the Axiom line?

Specifically I am looking at setting up a pair of Omnisat's with a purchase of M80's and a VP150, with the Omni's purely for movie surrounds as I do not really have the luxury (take a guess) of placing a set of QS4/8's in any Dolby recommended setup (maybe behind the couch in an upfiring situation is the best I could do).