Has anyone used a 4/3 lens with adpater on a G1 or GF1?

I am considering buying the Olympus 4/3 50mm macro lens plus the 4/3 to micro 4/3 adapter for my G1. The auto-exposure mode is supposed to work but the lens can only be used in manual focus mode. So I'm wondering if the focus assist works with the lens and adapter combination. That is, when you turn the focus ring the camera magnifies the view so you can better see when the subject is in focus. Or will I have to manually invoke the focus assist as I do with my Nikon lens plus adapter? Has anyone used the 4/3 adapter with a lens that doesn't support the auto-focus mode?

 

Thanks. I've been waffling between the Panasonic 45mm f2.8 macro and the Olympus 50mm F2. The Panasonic lens is smaller, lighter, has autofocus and image stabilization but the Olympus lens plus adapter is about the same cost, is sharper, is a stop faster and then I'd have the 4/3 adapter in case I wanted to buy another 4/3 lens.

I've got the 20mm f1.7 and the faster lens makes the LCD and EVF much nicer in available light situations. So I'm now leaning towards the Olympus lens.