I have been measuring a lot of 10K Z-foil resistors lately (VAR and S102K, not the Y series but same technology, similar datasheet). 6.5 digit measurements only, but tcr and hysteresis are readily visible.
So, yeah, 0.2ppm TCR typical is not that typical. Temperature hysteresis is real.
Personally, I would investigate PWWs like Ultrohm. For the same price you can buy several and pick a winner.
See Andreas' thread for measurements which, I believe, confirm my observations.