This is useful. Could be greyed out if mesh has changed.
I was looking for this functionality but I guess it’s not a thing… Ideally masks would be a separate layer and follow all the same rules as sculpt & paint layers ie. retaining resolution info from highest sub division but down resing with topology changes?
Maybe I’ll add Masking to the layers in the future, but nothing sure for now.
Saving mask will be usefull
Landed here looking for this exact feature.