I've recently been given the chance by my GM to make a new character using the Radical's Handbook as radicalism has been something I've wanted to try for a very long time. However, limitations are there in the form that what radicalism is there needs to able to be hidden on some level, at least from my fellow players (a rather conservative adept and a black priest) if not my superiors. I might add that the GM is using a fairly sand-box style campaign, meaning we are free to do as we want with what we have available.
Now - suggestions; does anyone have any thoughts on what might be the best options? I've been considering the Hive Mutant origin with rather discreet mutations. Any and all suggestions are welcome.

Which is why you have to be prepared to be a deceitful, lying, conniving son of a gun if you want to play a true radical. In other words, you have to be willing to be just as dishonest as your enemies (and your Inquisitor), if you want to pull it off ... for any length of time, at least.