I've looked for male mature mesh BOM skin or appliers but haven't found anything. Am I using the wrong search terms? Should I be looking for tatoo layers?
If you have a mesh avatar that is BOM enabled, you could wear your current skin* (as in the skin you were wearing at the parade the other day). It's the mesh avatar part that needs to be BOM (and BOM enabled mesh head, if you wear a mesh head).
It's a quick "short-cut" to look to see if a skin ad says it is BOM, because then it should have something that'll work for a BOM mesh body/head. But it won't work if you do not have a mesh avatar/head that is BOM enabled.
* the problem with older skin is that it tends to have rather horrifying feet issues. A problem solved by never taking off your socks (or shoes). Also solved by some skin makers who make "fixes" for feet & hands. Not all make fixes though. Not all are still in business for that matter.
EDITED TO ADD: Oh, heh. I forgot one thing: be careful and try demos. One of the issues that has come up is that skin seller's tend, now-a-days, to sell skin separately. Like, selling head skin separate from body skin. That way, they can make the body skin 'works best' on a particular mesh body, and make head skin that 'works best' on a particular mesh head.
Bah, reminds me of how much I hate this particular issue for the simple reason that it sometimes takes hours to find where a skin shop sells body skin. And, occasionally, finding out, after hours of looking, that you simply can't find the body skin. Of course, some skin makers only sell skin for heads then say "it matches" some other skin creator's bodies.