When i hear Inquisitor i see the middle ages Inquisition type of character.
I feel the same when I think of Inquisitors, but if we are talking about the current presets, having one battlemage type character with points in polymorphing and no points in weapon skills, would be a welcome adition to the game because bull rush can be cast with bows,staves and wand + shield combo.
For roleplay reasons these combat skills also make sense - you have polymorph where you can shapeshift into the person you are trying to interogate and aerothurge is the best magical choice for non lethal take downs, torture and imobilizating enemies. +1 in persuasion here also makes a huge amount of sense when you consider these situations.
Also I think the +2 in stats are more than enough to give each preset a unique feeling based on what race choice is made and that lizzard shed skin should be a source skill for polymorphing as I feel it is too strong for a free non source racial and am unsure on how that human racial would play out, but I like that dwarven racial proposed here.