Good review Markus!
No prizes for guessing that I like the lens, sharp and well built.......
Lenstip went to some pains to test the AF performance of the lens and it really is excellent with barely a miss!
What I miss a bit in the review is the possibility of making adjustments with Tamron's USB-dock (TAP-in console). To me, that'd be a reason to prefer it over the Nikon f/1.8 as well as the MFD of 0.2m. No reason to sell the Sigma Art and get the Tamron, but the possibility to fine adjust AF in 4 distances is useful with the DSLR PD-AF.
In Canon land I wonder how much does it make sense versus its OEM competitor 35mm f2.0, since the tamron doesn't have the low lower price advantage wonder how much would it sell.