Vigilantes should imo be rped by FL-ID combined with a bounty especially made for them by the House lawfuls.
First thing this faction will see is that most unlawfuls and lawfuls shoot it.
How can that be conducive to surviving ingamely and fun oorply?
And I doubt you'd be given the chance to explain in detail that this is only an ID and that you are not Xenos in reality and that everything is different than it seems and... you will be a blue message by that time, ganked by 3 Carriers that uncloak on you, silently instaing you while you are still explaining that you are not a terrotist.
I do not think it will work, to be honest. But if you want pews in every direction... hey, go for it.