This is a bad strategy. All the other neutral killers leave telltale signs of what they are. People will start shouting about being possessed or noticing people got reaped by their logs.
If someone fake claims inquis they will be instantly killed once people realize that the NK isn’t a sorc. I’ve never seen an inquisitor get hanged. I’ve also never seen a sorc win.
As sorc, you can’t fake claim inquis or else the real inquis just kills you. The real inquis is death immune and essentially un-fakeclaimable and no one will ever vote to hang him because doing so would be viewed as supporting evil since he’s viewed (correctly) as a much much bigger boon to the BD than to the evil classes.