Sprint Airave with Verizon Wireless Phones

[nanaki333]

So I just got a free Airave from Sprint for one of my office buildings to extend coverage in the dead center where no service is available. Not that it really matters, but does anybody know off hand if a Verizon Wireless phone or device can "Roam" on to the Airave for making voice calls? I'm going to get a fem2cell from Verizon and AT&T, but if Verizon phones can roam over, it's one less thing to get. Namely because I'm unsure if Verizon will give me a fem2cell for free.