I think the beer may be muddled if you add any fruit to 3068. How about brewing a doulbe batch and spliting between 3068 and 1010? Then add the blueberries to the 1010. Reason why I say it could be muddled is because I added some apricot extract to a glass of a hefe I made just recently and it was crap. Granted it wasn't real fruit, but I just wanted to see if I could do the same thing you're talking about. I went 50% 2 row, 40% flaked wheat (rice hulls added of course), and 10% vienna.