Interesting--if I were Scotts and could get away with this, I would do it too. Is this due to a temporary shortage or more long term?
Axe, makes a good point. How do you tell what percent even got established?
Don't let Scotts confuse you with their similar-sounding names for their 90 percent tall fescue--heat tol bluegrass blend. Keep shopping. I am sure there are other excellent KBG varieties out there. Perhaps some are superior. Bariris, maybe. Take a careful look at what seed experts suggest. Read NTEP reports with a skeptical eye. Paying particular attention to locations near you. Listen carefully to your local state university recommendations.