When I went through the Academy in the late 80s we were trained to use the handcuffs as pain compliance and part of a takedown if needed. The instructor specifically said hinged were better for this. I was trained to speed cuff. Other methods were trained as I continued in my career but all of the methods my department’s DTIs picked included using handcuffs as needed for pain compliance/takedowns. It was one of the reasons my primary cuffs were hinged.