Dual SIM Blackberry devices. Makes sense?

Everyone knows that BlackBerries, till v10, have been VERY business centric. While the Z10 and the Q10 have added great media-based factors, so people are beginning to want to use it as a primary smartphone. So why didn't BB release a dual SIM version of the new phones? It would be a boon to someone who doesn't want to mash up their home and work communications. I may be missing something here, so please let me know.