Hey, HMishkoff, welcome to MobileRead!
The problem with current e-ink and video is that its refresh time is on the order of .5~1 second, which would make video a bit ... jumpy.
The next iteration of e-ink, Vizplex, is supposed to be twice as fast, but that's still pretty slow.
It'll likely be a while before we get e-ink that is fast enough to handle video, either in mono or polychrome.
P.S. I'm going to move this to the forum for future e-ink devices, so more folks will see it.