I assume this is the lens you're speaking of? https://www.bhphotovideo.com/c/product/768816-REG/Panasonic_...
If so, it's sitting tied for the #1 spot of next lenses I'm getting, along with the Sigma 30mm/f1.4. The biggest hole in my lens collection right now is a fast portrait good bokeh prime. The Sigma is cheaper, and I like the slightly longer focal length, but it's also bulkier since it's not truly a native lens, and I suspect its image quality may not be as good. Do you have the Leica, and how is it?