A bit disappointed with the double shot keycaps. After a few weeks of use, had to remove them and replace with the originals. Personally, I didn't like the following:
1) Cherry MX switches have too much travel for my liking, so I tend to compensate that with blue o-rings, which decrease the distance keycaps have to travel. However for some strange reason Filco double shot keycaps have smooth stems all the way to the end. This means the o-rings are useless and keycaps always bottom out, as the o-rings simply slide all the way to the top.
2) These keycaps sit much higher than the originals and I found them somewhat uncomfortable. They also seem to wobble more than the originals.
3) The plastic that keycaps are made from, seems to be quite brittle. When I removed the keycaps, quite a few of them had cracked stems. No such issues with the original keycaps.
I think Filco need to go back to the drawing board with these keycaps.