Electronic mixing of the aileron differential is important in my book.
There's a review of this GP Waco in the July issue of the AMA Model Aviation magazine. Tom Sullivan notes as I have proposed that the model is overpowered with the OS 95AX. I am still thinking to fly mine with the OS FS95 and have a nice clean cowl, good sound and nearer to scale flight.
Here's the page with Youtube flight video
http://www.youtube.com/watch?v=0mNdxxLRdMo
Build video
http://www.youtube.com/watch?v=pq1Oh9Ml2kA