I would wait till I can see how the lens (I don't care about the zooms) is put together.
The NX10 30/2 is a heliar type design. Unlike the Pana 20/1.7/G1 (for visible), the NX10 sensor could use better lenses. The NX10 sensor is very sharp (unlike some review outfit claimed). The pen F 40/1.4, in particular, makes that cam sing. Having a slow lens (f/2.8) is no joy. It is quite clear that Sony went for the 16/2.8 to be different from Samsung and the m4/3rds. Their idea of wide attachments, while a welcome thought, are not likely to be impressive. I do not have a good impression of Sony's wide attachments (even for video).
Anyway, with such high pixel density cams, hand-held shooting isn't going to give a true measure of what they are capable of.