The only disadvantage is if you grow tired of the stripe, it's not easy to remove.
As long as the tape line is crisp and you bury the stripe in the clear, I like the look. I've seen some cars with bad masking jobs and the lines aren't crisp.
It'll be TA stripe (or similar) to go along with the TA look, so I think I'm safe there, but that is a good point.
I would have fear of painting them on. You would only get one shot of getting it right.
If I do it I'll be having Tony paint it, so I have faith in his abilities. Yours are painted, aren't they Mike?