I personally see no use for o-rings unless you're intentionally trying to shorten the travel distance on your keys. I've tried them on a few different switches and I absolutely hated the feeling of them.
I have high hopes for Zealencio clips, I think those might be pretty cool.
Yeah I've been watching around for those, but I find the 45'ish dollar price tag a bit much, as I've heard they are for the same purpose as o-ring "Silencing" the keys, and yes, I have to a agree it completely ****s up the feeling of the switches, I've only tried it on blues so far, I also have a keyboard with reds I want to try it on, but I feel like as they already are pretty much silenced they are also just gonna feel destroyed and like a glorified old keyboard.