Question about summer 1978 tour

i actually have issues with these 1978 versions of Sisters...The song just seems to be scattered and very unstructured. Stevie's vocal is all over the place. And Christine's backing seems unnecessary and out of place. I'm pretty partial to the 1979 versions so I'm biased. But, still cool to hear...

What's interesting is hearing Lindsey sing the verse "Some call her sister of the moon..." and then repeat that again in 1982.