The only double -dipped in terms of Absolutes/Omnibus and deluxe editions seem to be Death, Invisibles, and Y the Last Man, so there is some precedent. Books like Sandman, Preacher, Transmet and Doom Patrol could eventually get deluxes, but I get the feeling they are in no rush to do so. Doom Patrol went directly from Omnibus to fat trades, for example.
Also with books like Hellblazer and Lucifer the fact that they are getting the fat trade treatment doesn't bode well.
I wish all these books would get deluxe editions, but I'm not expecting it.