My limited first hand experience involves creating and rearing them. Cross easy to make and goes both ways through natural spawning. Hybrids do not grow faster than pure parents, but they make keep growing once they reach upper size range for crappie. The are not sterile. Overall, I see no advantages to them. They can be problematic in distinguishing from pure Black Crappie if marketing in any numbers for stocking.

Aquaculture
Cooperative Research / Extension
Lincoln University of Missouri