>>3878293They.... work depending on what the focus motor design is on the lens.
Some lenses work better when adapted to a contrast detection body. Some work like garbage with contrast detection.
You will need either the Olympus or Panasonic adapters for FT anyway. But everything will work as if it were native on MFT due to backwards compatibility built into MFT.
Pic rel is the FT 300mm f/2.8 lens with an x2 teleconverter and FT-MFT adapter mounted on an Olympus Air.