Originally Posted by Redwood
Pretty much any mixer that has a diverter in the tub spout or, between the mixing chamber and the tub spout will carry that warning.
The type that basically just shut off the tub spout.
Ones that have a selector valve usually will not have a problem.
Agreed, but I have a feeling most here will not attempt to install the ones with the selector, since it is not a typical big box store valve.