I don't understand those complaining about this not being a strictly third person affair. There is a few reasons why the 1st/3rd person hybrid was the best choice for this game. The first obvious reason is that MachineGames are masters of the first person genre. They are mostly known for their take on the well regarded Wolfenstein FPS game series, so it only makes sense to carry over the genre they do best.
The second reason the FPS viewpoint serves this game better is because the third person action/adventure puzzler is played out. Games like Tomb Raider and Uncharted already exist, so why go that same route when it would just be compared to both of them and possibly in a derivative, unfavorable way.
From what I saw of the game in action the world is much more immersive and fluid than most third person games. The whip mechanic in this game looks like one of the highlights of how fluid the action can be from a first person viewpoint. I really think MachineGames nailed this mechanic and it looks much more fun to control the whip in first person than in third person.
Indiana Jones games like Infernal Machine, Emperor's Tomb, and Staff of Kings were all clearly derivative of the Tomb Raider formula and none of those games stand out as memorable or unique in any way, so I'm glad MachineGames can bring something new to the table that looks to be a fresh take on the action/adventure formula.