I find it valuable to know who people here are, to know who would and would not make good soldiers and agents against the Serpent. [He didn't feel the need to glance down at himself, or really make a response to his fashion sense, though his lips did quirk slightly at the compliment. Of course it was better, he was more than human, after all. But he doesn't feel the need to brag about it.
Putting the phaser away (he doesn't need it to cause harm if he has to anyway), he takes a step forward to look into the bag, placing one hand on it to keep it open. He glances up at Garak again, still ever alert, even though his outward appearance doesn't really show it.] Then you care as much about protecting your world as I care about protecting mine. [Which meant Garak had likely come here of his own initiative. Though Khan had never heard about the Cardassians they seemed like the sort of people who he'd want on his side.
That Garak claimed to have attended a school for state security has to make Khan wonder if there's some reason why he became a tailor, or if it was nothing. Regardless, he would save such questions for another time.
He reached into the bag, pulling out one of the chemicals carefully, glancing up at Garak's question.] Khan. Perhaps you've heard of me. [It's not meant to be a boast about his own fame (or, more accurately, his infamy), but rather an acknowledgement of how much Kirk went around telling people what a horrible person he was.]