I`ve done loads.
I`ve got a 3/4 track that could easily mix into 4/4, although the phrasing and changes will occur in odd places.

Everyhting I am doing now contains a lot of polyrythms. Various different timings over 4/4

It`s great and really changes the groove.
Makes programming a lot more complex, but I really, can`t get back into straight 4/4 now.