How to use scikit metrics for a statsmodel or vice versa?
Interpreting the code (since the error received is not mentioned), it looks like the code is passing in the X matrix and y-pred to the metrics. According to the documentation, the metrics want the y-true and y-pred. This would lead to an error mentioning incorrect dimensions.

I have used statsmodels and call scikit metrics. Many of the scikit examples, like the above documentation, show arrays being passed in, not from a specific model. 

If that is not it, please post the error received.