I finally took a big crash in my Radar Boots. I had the laces tight, and there was no way they could come off. I think it's better to have both feet stay in, versus just one foot coming out.
As for satisfaction, they're really comfortable, have great edge control, and now that the water is in the low 40's in Washington, they keep your feet from freezing. I think anyone who likes Hard Shells will be happy.