I have that set-up on my Rossi 9X's. I think they are great bindings. I've release when I needed, and have not pre-released. The demo binding is very heavy. I've picked up the skis with out bindings at the shop and they seemed heavy too. I don't see any problem using them racing. I'm an instructor not a racer, but I do race nastar and fund raising events. The skis I bought were "used demo's" from the area rep. He used them 5 times.
go for it enjoy the bindings.