IF for me. I've been doing it for years without knowing it was an "approved" method anywhere in the golfing world!
To prove Mr. Kelley's point of no right, wrong, or best...
I prefer setting up with impact hands. It helps me keep my alignments at impact.
I find the MAJORITY of my students enjoy standard address with lagging club-head takeaway. I have helped a lot of people moving them in this direction just as YODA taught us at Medina!
I will keep fooling with SA and LCT and it wouldn't surprise me if I change someday...
Kevin
__________________
I could be wrong. I have been before, and will be again.