Well I hate to quote my own post but anyway...
Tried the lens out last night at a local event and I'm over the moon with it. I have no doubt that a side by comparison with the Olly 25mm would show up some shortcomings but for less than £50 new you almost expect something unusable or toy like and yet the image quality is really quite nice. Plenty sharp enough wide open and nice bokeh. Corners are probably not perfect but it'll never get used for anything where that matters. I'm pleased as punch.
Only other gripe worth mentioning is that because the aperture ring is de-clicked and because the the small size of the lens dictates that the focus and aperture rings are close together, I have found myself changing the aperture without realising. It's not that obvious in the VF either as sometimes adjusting aperture can bring stuff into focus as you increase DOF so you think everything is hunky dory until you realise you've just tried to shoot a portrait in the dark at f/16! Anyway, now that I'm aware of that, I'm training myself to hold the focus ring in a way that keeps my sausage fingers away from the aperture control. Seems to be working.
Highly recommended if, like me, you like messing around with MF lenses or, again like me, you don't really need a fast prime so hard to justify the £200 ish for an Olympus option.