Yes, I have extensive use in strategy manager.
I believe we need to clarify, strategies do not create the features but apply tools and tool paths to the existing features, either features found by the automated or manual ones you create.
The best way to think about strategies is to use them as tools that can rapidly apply tools and tool path. The tools and or tool path can be perfect or could need a few tweaks. And as time goes on you refine the strategies until the tweaks are no longer needed.
But also know that it is not an either or, strategies and PCIs can work together and can give you a great solution.