As much as I hate to revive old threads, I found this and it got me thinking. In theory, if someone had a good understanding of multiple arts, and wanted to combine them, there is nothing wrong with that. The act of doing so isnt bad. The result could be bad, if the person doesnt have the skill to do it. And, some styles could be blended together to make a better whole. For example, TKD and Kenpo Kenpo hand techniques blended with TKD's kicks? sounds pretty well rounded. But, just like the fighter makes the style, so too does the teacher make the art.