Really nice. I wish there were a similar compact option for the Sony A7 series. The Sony HVLF20M doesn't have all the features that this one has.
Woud've been interested a few months ago, but with Leica announcing its 25mm f/1.4 for the M4/3 (MFT) mount, I'm going with that. They (Leica) even priced it relatively affordably at $1200.