Mixing cool and warm season grasses

Sometimes I think too much and yesterday, while traveling around my hay fields, I got to thinking:

 

What if I mixed a field of OG and big blue stem?  I'd have cool season grass for the spring/early summer, segue into warm season big blue stem for the summer, then back to cool season OG for the fall.  

 

Anybody ever tried this?  Wondering if one would smother the other out?  Seems to me this would be fantastic for pastures!  Would only have to feed December through March.

 

Ralph

 

 

 

Mixing cool and warm season grasses