Although I admittedly have never traded with IB yet. I've never seen any canned algorithms that work as consistently as when you calculate them on your own.....It's kind of like believing that some of the algorithm based entry techniques should work just the way you want them to everytime you use them without knowing what's happening behind the scenes....
I am not sure about the other IB greeks, but the IV calculation always looked wacky to me. For example, the QQQQ Nov $40 Call today shows about .85% when the correct figure is about 12.5%.
