I'm disinclined to buy this, although that's admittedly because of my own biases and experience. It's just that my spacial reasoning skills (as of that of my sister, who is one of the most creative and witty people I've ever met) are so insanely poor that it actually counted as a learning disability in school. (And thank god for that, because if I'd had to stick with the "visual math" curriculum my school'd been pushing, I'd still probably being trying to complete per-algebra...or at least their bizarre, mystifying version of it).
Spacial puzzles are a special kind of hell for me. But my inability to rotate objects in my head, draw with the level of accuracy most 8 year olds can accomplish, or learn any knots more complex than a square knot has never actually seemed to hold me back when it has come to problem solving or coming up with creative solutions...well, except when those problems are "fit as many dishes as possible into this dishwasher", but still.