I have a pair of the Strength shoes... and have been using them once a week for about a month now...
I play in a couple of leagues.. and I consider myself a pretty good athlete.. but I do admit that I don't have the best hops. So, I bought the shoes in desperation.
I work out mostly at the park.. (the grass is a lot better on the knees than concrete) and I do box jumps and depth jumps on the picnic tables.
I have noticed a little bit of improvement in my jumping.. and my outer calves have gotten bigger.. I definately feel more stable and powerful on the court though..
My balance and footwork have seemed to improve and I am better able to make power movements.
I also work legs once a week.
Barbell Squats
Lying Squat Machine (explosive- feet seperate from stand about 4 inches or so)
Leg Extensions
Romanian Bent Knee Dead Lifts
Calf Raises (explosive- but feet don't leave stand. Pause is at the top of the movement.. then down and explode back up)
I am a 5'8 shooting guard. Undersized for a SG, I know, but not many people can shoot the trey like me. I wish I had a point guard mentality but I have a shooter's mentality.. and my handles are not up to par for a really good point guard. Maybe too much info for you.. but whatever.. thats my background.
The shoes were about $100.. worth a try.. calves were really, really, really sore after the first couple of times.. but I guess I am getting used to it now.