Check out eoshd forums for some rolling shutter examples. In FF mode rolling shutter is greatly improved - looks about the same as the A7s in crop shooting.
Not applicable with short business profile videos. Business owners are not used to being on camera - they just wat to look/sound good. I splice up there speech all the time - re arranging the order of things said etc. it's all about the final product for them. I have no problem faking it to make it.
Tried it a couple times in projects over the past week. Haven't had it be useable yet where I needed it. The interviewee moved in the chair too much once and a car drove through the background another time. I had a hunch that a disappearing car may take the focus away from what was being said. I'll keep trying it though.
I only use wide shots, locked off shots and always strive for completely flat light to fill in the shadows. Maybe that's why no one makes video essays about my movies. :(
I find that sharp footage isn't always desirable, but sharp pencils are. No one likes a dull pencil.
It's funny, if you hadn't of told me I wouldn't have guessed this was anything over 5.232k.