dcamprof or lumariver or almost any other software out there starting with Adobe’s own are great for any light environment ( controlled or not )… for as long as the user understands what is going on they will deliver better than PL7 …
No, I know how to adjust the white balance very well without using color calibration. What I mean by that is that color calibration is a big plus in post-production, it saves me a lot of time, because for a series of photos I use the color chart and then I applies to all my photos. So the white balance and colors are adjusted in one operation, and much more precisely than if I did it manually. In addition, skin colors are respected under artificial lighting.