I wouldn't knock the programming capability of Craig and others who created Neb and PHD, a far more versatile and capable program that work well together with autoguiding dithering to do much more than a few individual apps.
I think Cloudmakers is doing fine work and I always support developers for the Mac. I will continue using Neb and PHD as nothing in CM is replacing them. If you're using a cable to power your 6D then you can as well use the USB cable and use Neb. Or if shooting wide field star scapes or similar 'off the grid' using the EOS Utility on wifi and an smart phone will also give you live view + control that Astrodslr doesn't.
clear skies and keep shooting.