Yes Joy, I don't do current "mainland" WCK either. Just good old Ip Man WCK with Lee Shing/Joe Mans personality stamped on it. I have, at least, met and watched the Foshan groups demonstrate in person and can see the similarities and differences. Still, I've yet to see anything else from the mainland that catches my attention so I can see your view too.
You didn't even answer my question
What do you call this single leg technique?