This is a terrible take I've heard countless times. ICly there are tattoo coverings for this reason. The mod or command is there to make it obvious to other people without you spamming /me is wearing tattoo covers.
Unlikely to purchase a script from that guy. I did speak to Strobe a while back asking if it's possible on Rage. Now that a custom animation tool is being developed for 3DS Max it could come closer to reality.