Indeed.
We introduced a 360 degree appraisal system for a while. That was swiftly abandoned when the feedback towards managers was negative!
We also have a 'staff-survey' every year. The results of these are obscured and blended - and when I asked why, I was told that it was because the...
One of my colleagues recently had their annual performance appraisal.
Negative thing raised: "you can be too challenging and difficult and emotionally involved - such as by raising the issue of x,y,z"
Positive thing raised by the same manager: "not afraid to raise difficult issues, and good at...