If I recall correctly the Abrahamic religions forbid tattoos, but in spite of this many people get religious tattoos. My sister has a cross on her back, the Lords' Prayer tattooed in Arabic on her shoulder and in 'Aramaic on her mid back. Do you ever think there is any hypocrisy in honoring your religion with an act that would be forbidden by it?
From what I understand, tattoos with religious significance are mostly symbolic. And those who get them, aren't necessarily practising their religion to the best of their ability.
I know many people, mainly Christians, that have these types of tattoos. And from what I've observed they are usually not that familiar with the teachings of their religion. Or because they simply don't know that it's against the religious teachings.
My own personal view is that it depends on the intent of the taboo - If it honours the symbol somewhat I would feel it is okay but if it debases the religious symbol and would cause offence like a parody of religious text or image then it is not constructive.
If my interpretation of scripture is correct, the mosaic laws, such as those forbidding tattoos in the old testament, gave way to the new covenant. Once the savior was crucified, ritualistic membership into the kingdom was abolished.
I'm a Christian youth leader, and here is what I tell my students, based on what I said above: there is nothing wrong with ink until you start using it to lean on.