It looks like one of those ideas that looks good in theory but when you start using it in practice it gets in the way.
I'm not a fan of Bridge, as I don't like the way you have to declare your bidding system to your opponent and you spend one in four hands doing nothing. Nevertheless, I would have considered buying this if I could have afforded it. My wife was with me at the time, though, so I couldn't have afforded it.