Burris AR-332 Prism Sight on a AK 74?

Just read about this scope, and I like the fact that the Burris AR-332 Prism Sight provides 3x magnification AND red dot capability in one package. The question is would a scope calibrated for the 5.56 round be useful on a 5.45x39 AK 74? Are the trajectories of the rounds close enough where the Burris is a good alternative to the POSP?

I have a different Burris scope with a ballistic drop reticle, and it came with a chart to show what the hash marks correspond to for various common calibers. I'm sure you could figure out what those marks correspond to for 5.45 after a day or two at the range (assuming you have access to targets at those distances).