I think this is a good question, but I'm going to go against what you asked and offer my opinion on the matter anyway

. I think Johnson's response was a pretty good one. I don't think that a having a tattoo equals a go straight to hell card. Yes, Leviticus tells us not to mark our bodies, and not to get piercing. The Bible also says not to make any idols.
Ex 20:4 “You must not make for yourself an idol of any kind or an image of anything in the heavens or on the earth or in the sea. 5 You must not bow down to them or worship them, for I, the Lord your God, am a jealous God who will not tolerate your affection for any other gods. Does that mean that we are sinning when we hang up the paintings, put them on Christmas trees, buy the cute little figurines, and jewelry? How about necklaces with a cross charm? How about pictures of Jesus? This may seem a little extreme, but none of us have seen Jesus, so we really can't paint a picture of him. So, in essence if we hang the paintings on the wall or put up the stained glasses in our churches we are indeed worshipping an image.
Now, as far as what Johnson says about Galatians 3 I think that is a great point the only thing is that we have to make sure that we don't cause another to stumble.
I Cor 10 31 So whether you eat or drink or whatever you do, do it all for the glory of God. 32 Do not cause anyone to stumble, whether Jews, Greeks or the church of God— 33 even as I try to please everybody in every way. For I am not seeking my own good but the good of many, so that they may be saved.
I don't think that a tattoo will cause someone to stumble, but I don't think I would get one...who wants to see graffiti on a temple? Do you not know that your body is a temple of the Holy Spirit(I Cor 6:19).
I personally don't have a problem with tattoos, but unless God explicitly says hey John you should get a tattoo to glorify me...I wouldn't consider it to be a wise choice.(unless it's one of those temporary cereal box spider man tattoos.... they are cool)
I think that sometimes we get so caught up in living "holy and righteous lives" that we forget that the Law isn't what saves us. I can't remember how "thou shall nots" are in the Old testament, but I think it's pretty impossible to keep all of the commandments that are written there. We have to be careful, because it can lead to Biblical arrogance much like the Pharisees and biblical scholars of Jesus' time. Paul tells us that we need to have circumcised hearts.
I think that ultimately we compromise our values and conform a little too much to the world all for "the glory of God", and we need to be a little more aware of the possible impact of our actions.