I've played it, and a lot of CAV, which uses the same engine. There's a good game in there, but there are things I do not like. The initiative system forces you to play "big" and have a lot of units. Each unit on the table gets a playing card, those cards are shuffled, and units go in the order they're drawn.
You cannot play the game small and have a satisfying experience because of this. And it feels more like a skirmish game than a mass battle game to me, so this is frustrating.
I do really like the way a model's performance goes down as it suffers damage. very slick. And I like rolling D10's. Gives you a wider spread of abilities than D6's in WFB.
Anyway, just my $.02.