^Almost exactly same thing here, except that we usually single-stroke the 230. So far, we've only done this with soft hand white ink, which takes on the tone of the garment. I always prep people for the fact that the print will be affected by the texture of the garment, so they know what to expect. Very soft, everyone has liked them. (But glad we don't have to deal with them often.)
Re mutliple colors: I remember seeing dye-sub'ed burnouts at a trade show once. They looked pretty good, but I've never tried it. Might be something to experiment with.