I have found a few little tricks recently. While not as effective as the philter of concealment, I found another potion that will also hide the person wearing it. Use a smooth potion vial and dragonwart in place of the gemmed vial and balm leaves. Also remove the shissar blood. I also found that lucerne, benzoin, mandrake root, night shade, birthwort with the normal vial and power herbs for affinity potions will make potion that will align you with a chromatic power. While this is one more herb than normal, it is what is required to make the potion function.