Seams: well crafted, sewn flat so nothing presses
Zippers on the legs: excellent quality, it tweaks a nothing and they promise long life - because Odlo is better than most competitors.
Fit: For me, 172/62 S is really ideal. Nestled in itself and fits like a second skin
Key pocket on the side: getting used to. I've always been there the fear that once the zipper inadvertently rises and then the key is gone - so I do not use the tray. Also, the key would possibly interfere on the side more than the back, as with most pants. Nice try to distinguish themselves from the competition, but not really useful.
Design: a bit boring, especially the pure black pants. When the key pocket stitching makes a not very nice kink - that could have been a better solution.
One point deduction is available for the pasted logo. While the competition logo weaves mostly, it's just stuck in Odlo. After half the winter season, the logo in the first trouser begins to dissolve. Soon there is only "DLO" there. This is the biggest weakness of Odlo (with other garments). Why not just weave the Odlo character and omit the logo?
Total predominate for me the positive qualities of the pants, so I bought a total of 2 pcs. Of (one of them here).