I have been thinking about using two adapters for lenses. The idea is following: Put a 4/3 to Nex adapter into camera and fit all lenses with adapter to 4/3. That is about saving space on travel, in many cases the adapters are as large as lenses. I am basically stuck to PK, M42 and CY (I try to get lenses in these mounts and even replace some lenses with these mounts). Any ideas?