Here you go - a little while back I attached a sticky metal disk to the back of my phone (I got a packet from Amazon a few years ago) and the Mic Pro holds onto that like a limpet, particularly if I use the supplied magnet thingy. I guess if showing a guy your phone while holding it they wouldn't see what is underneath it anyway - or if put on a table type surface, phone screen up, they would assume it had a holder behind as it wouldn't lie flat. And if they glanced at the back, the image on the Mic Pro kind of looks like the back of a holder. Well, slightly...
Pics attached, hopefully... you could download the design I used to your phone and use that to customise your Mic Pro display. Or not.