?

one mesh/uv mapping  has only one template.  so technically one template fits all.  if what you mean is having one mask fit all textures, then you're right.  that won't work because everyone decided to deal with lips differently.  in point of fact, most of the differing material zones are unnecessary because almost no one uses pure zone borders because they look awful.  and never at the lip because that's glaringly bad. so people make their boundaries with textures  not zones.  as a result, they can put them anywhere within the template, not just on a zone boundary. 

the only exception i've seen are gloves, and even that's rare.