Good quality, ok shipment. Switches are not pre-lubed, so pretty rough and some are sticky (they jam after being pressed). Waiting for the lube to arrive, gonna update my review later. Got a few T1 in the past from a friend, liked them, they were lubed a bit.
I like the switches I bough the 62g Koala switches, which I like, but the space bar got stuck, because of the lighter spring. I bought some 67g springs, which solved the problem. With the 67g it does not get stuck anymore. I'm still unsure if I should replace the other springs of the other switches too, it's a lot of work just to try it out. If you go for the 62g switches, it might be a good idea to get some 67g too, in case you run into that problem. The other switches work fine, but 62g is really on the lower limit.