it works! (2 out of 3)

I bought this set a few months back from a local retailer. I was really curious if it would work and it totally does. I convinced myself to get this combo package because I wanted the push-up spinners as well. It was about the same price for this set as buying the bar and spinners individually. The ab straps seem pretty useless because they are one-size-fits-none.
Caveats:
1) you need to have molding round your door frame. Most doors do but you should check.
2) Works on my home doors but not on the office doors at work -- those doors are wider. who knew?
3) The straps are useless. I haven't found anyone who was the right size for them to work.
4) The push-up spinners are pretty sweet. They really make push-ups harder. They also let you go negative dropping below your hands towards the floor. You really don't want to go negative as it's bad for your back/shoulders but being able to go to neutral zero without hitting the floor is great. You don't get that little rest at the bottom to cheat.
After a couple of months the foam that rests against the side of the door frame is starting to wear off.
in summary:
bar : works!
spinners: works!
straps: zero.More detail ...