Obvious is the word I would use to describe the difference between these NK Creams and the Silk Yellows I had installed previously. Immediately I could tell they were heavier and that they were not lubricated. I type with enough force to almost always bottom out, and while I still was bottoming out with these, I could feel the additional effort it took compared to the Silk Yellow. Of course I adapted to that as I continued to use the switches, to the point that now it does not stand out as much, but has had one impact I was not expecting. I will get to that after covering what I ascribe to the switches not being lubricated.