What I like about the Summilux 35/1.4 v2 that I have is that the rendering is "aperture adjustable" ... wide open, it renders like the Summicron-M 35/2 fitted with a Zeiss Softar 2 effects filter, stopped down to f/5.6 or so, it is razor sharp everywhere. That, plus the fact that it's very small and light for a 35mm f/1.4 lens, makes it a wonderfully versatile piece. It's been my choice of a 35mm lens for a decade or so now, replaced my more modern Summicron-M 35 when I bought it.
I've now used it fitted to every Leica M and mirrorless camera I've owned since then, and I haven't found anything that makes me happier in this focal length yet. 🙂
G