[Never judge a book by it's cover - he doesn't trust you enough to let his guard down entirely.]

Pointless.

[Shaking his head at the question, he flicks open the lid and gulps down a quick sip of water before staring down impassively.]

Right now, we're team members. So right now it'd be like shooting myself in the foot by wearing your endurance down before what will likely be a lethal fight. Assess the situation before you and prepare for that instead, idiot.