if its optically decent and really sub /€ 200 I may pick one up as an ultra-light "outdoors/mountaineering" lens.
This lens demonstrates, just how small modern full-frame-capable lenses can be built. With AF. It proves, that AF does NOT make lenses bigger than MF-lenses, rather the other way round.
High time for a KILLER FF mirrorless, Canon. Stick the 5D3 sensor plus a great new hybrid FPPD & CD-AF system in a small body for a smaller price than the 5D3. After all, there are some savings by avoiding the cost for materials, manufacturing and labor-intensive high-precision-assembly of mirrorbox and prism! :-)