planning to install both Di2 9070 and 2012 SRAM Red Quarq power meter on my Specialized Frame....was told that these 2 arn't compatible. Obviously by you photos this is not the case. Any issues here. In general is there any compatability issues with using standard (meaning old 10speed) chainrings with the new 11sp Di2.....??
No issues as such. I also run a Quarq with Shimano Di2 7090 on a Scott Foil 10. The changes with the Quarq are not quite as crisp as with the Shimano crankset and rings - on my Foil 10 I ran full Shimano before I got the Quarq and the changes with the Quarq, whilst good, were not quite as good as with the full Shimano. I went straight to the Quarq on this bike with the 11 speed 9070 Di2, so I haven't got a reference point there, but logic says that full Shimano would be better.
However, overall, no compatibility issues at all - no need to do anything special as regards set up - bike was built from scratch in a couple of hours. For me, having the powermeter definitely offsets any downside in shifting performance. It is fair to say that SRAM and Shimano both overstate the compatibility issues - they'd like you to believe that you need to stick fully with their product, but that definitely isn't the case.