In the BYOB9 I can fit my EM1ii with 12-40 pro attached, the 40-150 pro stood next to it (lid only just zips up) and another lens (like the 60mm macro, or 9-18mm) in the bit under where the grip sits as the camera faces down. There are lots of little pockets for memory cards around the outside.
I'm not sure how the 7 differs but if it isn't as wide then I'm not sure it would fit your body and a lens next to it.