I don't know any appraisers that are doing these. Every appraiser I deal with in appraisal groups have no interest in them and will be actively fighting them at the state level. Some state laws are fairly clear that an appraiser risks losing his/her license if they do them. fannie doesn't care about your license, you do.
I suspect staff appraisers will have no choice, they must do what their employer says. That's why NC had a certified appraiser 2,000 miles away signing a hybrid report for a property here. If that's what the masters think is best, then we are in a lot of trouble. The wizards that run the show and make the rules might want to think twice.
But the trouble with staff appraisers has always been the same thing - you can't keep them around. People eventually get bored with making $17/hr and move on to more lucrative careers, like uber driving.