I also have the clicky version. I bought linear matias switches and swapped out the clicky sliders for the linear sliders by opening the switch top with tweezers. I can confirm that this vastly reduces how loud the switches are. I got the idea for the mod from this comparison video: https://youtu.be/Son03f8ul4E. I really prefer the sound and feel of the switches when dampened. I’ve also lubed the switches thoroughly with Tribosys 3204 lube and that also has made the switches much more silent (and pleasant).
Also, I have noticed that the “click” in the clicky switches is rather inconsistent. Some switches click much louder than others. After permuting the click leaves in the switches, I noticed that this also permutes the noise levels of the switches in the same way. What this implies is that if you have any frequently used keys which are particularly loud, you can switch the click leaves of those switches with that of less frequently used, less loud switches.
Overall, I am much more satisfied with these switches after lubing and dampening them. Between the two, dampening provides a better sound-dampening. I also believe dampening the switches made a more positive impact on the key-feel than lubing them.
Edit: I forgot to mention that if you wanted the even more sound-dampening, you could also swap the click leaf in the clicky switch with the click leaf of a linear switch or tactile switch.