Been spending a lot of time on here!
Went out to practice and learn the quirks of the 7Dmkii w/the sigma 150-600S. All of these are handheld. Highly mixed results, all operator based. Most problems occurred with trying to learn how to operate the 64 focus points with AI-servo. A lot different from the old 7D. world of difference between those two cameras, and I thank MSnowy, and CoastalConn for their advice on this. Anywho got a couple keepers and I'll add in a couple of the operator errors too. Tested the low light capabilities yesterday and it is almost the equal of the 6D...which is actually the reason I got the 7DmkII. So all in all pretty dammed pleased because I am confident now that all errors will be operator and not equipment.