I used one for the fisrt time last year and must say that I was suprised by how well deer responded to it. I have the buck decoy figuring that real bucks will respond to its presence no matter what phase of the season is occuring. I had does on 4 different occasions come nose to nose with the decoy without every spooking. The only buck action I had was a 2 1/2 year old that came into 20 yards of the decoy, circled infront of it, then got confused when the decoy appeared to disappear. At that time he got pretty nervous and headed off the direction that he came from. He was never spooked but knew something wasn't right. If he'd been a shooter, I would have had plenty of time to take a crack at him.
I don't know if one year of experience is enough to pass judgement on the effectiveness, but for what it is worth I am going to carry him with me again this year.
I agree that the ease of transporting this type of decoy and the affordability make it worth a go.