Yes, me! The name could just be coincidence but I doubt it, as the logo matches (and the link suggests that he's from gemany, where DSA is well known). The choice, if from DSA, is a good one, isn't it? However, as in DSA things like that tend to have origins somewhere else (e.g. satinav<->vanitas) it might be that there's some non-DSA relation between fox, "phex" and exchange.