I still find the application of the new leg grab rule a bit questionable. In particular, what gets called a legitimate counter often doesn’t look like a counter to me. Here’s an example of Ariel Zeevi (one of my favorite judoka) winning one of his many matches at the 2010 Tokyo Grand Slam with a Te Guruma.
I’m assuming the refs allowed the leg attack because they considered it as a counter or saw Blue’s cross grip as over-the-back (which is what’s required for a leg grab to be legal).
I get tired every time I have to write, talk, or think about these nuances (since I believe all throws should be legal, unless they severely endanger either player). But it’s important for me (a guy who values pickups) to understand when I can and can’t do them. As a practitioner of both BJJ and Judo, the ability to practice and successfully execute leg attacks is essential for me. I have many judo tournaments coming up, and I fully intend to use te guruma according to the rules. Hopefully the refs will allow me to do just that.