It seems like we use the same principles quite often! The Ura Kote Geashi wrist control/lock is useful and easier to find while blocking and controlling limbs than many other two handed variations. The grips and kicks help keep the opponent pointed away and give a better attack angle. I don't practice Seiyunchin but I've watched it many times and was not sure what section you were referring to?(though many seem like they'd work great!) It has been fun trying to imagine how to use the movements! Thank you