It's all VERY personal, but if you usually carry the 2 bodies, I'd go for the 2 lenses.
For MY use and style of photography I usually like to carry just one body, the E-M1 Mk II fitted with the 12-100.
I had the 12-40 and 40-150 Pro, but often found that I had the 'wrong' lens for the shot, and by the time
I'd changed lenses, the photo opportunity had passed.
Not missing the moment, is more important to ME than ultimate image quality and the 12-100 gives me my Goldilocks range.
For ME, the dual synch that my lens/body combo offers is not that important, as often it's my subject that is moving.