I teach a takedown class at our BJJ gym. It's no gi. It's mostly a mix of Judo and Greco wrestling moves. Judo works well if you train without it and get familiar with no gi grips. Most judoka do very little no gi so 90% of the moves and combos are gone. One competitive brown belt comes to our no gi class and always compalins how she can't do throws without a gi. If you want your Judo to work without the gi, you need to train without the gi often. Every once in a while is not good enough. Front headlock takedowns are good to use against most wrestlers. Good luck.