Who would be dumb enough to think of a design like this? I can tell you right now that almost every cop of my acquaintance (and I’ve worked with a lot of them) would be ready for trouble as soon as he saw it. He might not draw his gun at first, but if he saw you pull that out of your pocket with no visible reason to do so – before he noticed the cellphone attached to it – he might not wait to ask you politely what you were doing. Action beats reaction, and he’s not going to wait until someone aims what looks just like a gun at him.
Source: Bayou Renaissance Man