This is all based on the assumption that Poch wants to bench Lloris but is too scared to.I think rotating players in the physically most demanding position is a little different to dropping your team captain, despite him performing shit. It just won't happen.
Lloris will only be dropped for domestic cup games or in the case of injury. Feel free to quote me on it if I am wrong. It takes bollocks to drop your captain after a poor game. I don't think many, if any managers, would do it.
Maybe Poch wants to keep him in the team because he's Hugo Lloris.