@lvoss:
I would not recommend using a single crate for two dogs that are unattended. If you are worried about separation anxiety then try two wire crates side by side.
While I understand the concern and that our situation may well be atypical because Keoki had such extreme separation anxiety, Our dogs did not do well in separate crates. Rather, KEOKI did not do well in a crate separate from Jazz, even side by side and wire. Jazz is fine alone anywhere any time. But He had the most horrid crate anxiety until we got one large wire crate and put them together in it. Now he loves the crate….just don't latch it with him on one side and her on the other. He has to know he can touch her.
In the beginning they did have the occasional brief spat, but now when he crawls on her, she just mutters swear words under her breath and lets him curl up with her.
They do each have their own bed in the crate and usually sleep each in a bed, but sometimes they sleep crammed into one.