I brought the 9-18mm and Panasonic adapter, whilst at the shop I did try try the 14-54mm II on my E-P1. I found it slightly faster than the kit lens and better quality but obviously it is a big lens for the E-P1. I do think it balances the camera better, give it a try if you can.
Both lens where firmware 1.1 which upgraded the CDAF time.
Thanks for the info. I would agree with you that for carry around and lightweight, those sorts of lenses are great. However, I really am looking for something with a wider range, sharper, and faster for hiking. I already carry a good bit of gear when hiking, so a little heavier lens is no big deal. I'm even considering the Sigma 18-50mm 2.8 4/3 lens also. I think it would be great if OLY would make a mFT version of the 14-54.
I'm back.. now with E-PL1 and 14-54 mk II... this lens focuses fast. I've used it indoors and also works well. Its not as fast as when I used it on Olympus DSLRs but its acceptable. The extra time is due to making a back-and forth around the focus point.
The only time its not focusing (any no other lens-camera i tried did) was when i tried to focus on featureless object: like a completely uniform wall or even worse on a dark featureless object.
Unfortunately I cant compare it to any native m4/3 lenses since I do not own any at this point in time :-(