Using in home office; carpet and pad are about half-inch total; have had less than a week. A valley forms under the chair wheels when I am sitting but chair rolls easily once nudged from the valley. Depressions left by wheels bounce back soon after I get up from chair. Overall I'm quite satisfied with performance.
We took it up almost immediately. We have very expensive new hardwood floors and we could see that would scratch it. We are getting a rug and the appropriate mat.