Sam felt that there is a great chance that Kiran wouldn't come to meet him. But he is not extremely worried and was ready to accept either outcomes.
Because Kiran might be a high profile person, but he is not really that strong. In fact, even Gran and Sia might be able to give them a tough fight. After all, they can hold their own against the Saber Monrach without getting caught for a good while. At least a lot more than a twenty or so minutes.
Even though most of it is the result of their elemental usage, it is still a great achievement.
But he would still take this guy in and most of it is due to the disguise technique and his desire for glory. If his desire is strong enough, Sam could use his ability in art of disguise to make infiltrate different places.
And kiran would comply just for the glory or thrill of doing those things. After all, all the enemies and opponents Sam is going to face are going to be beyond what Kiran could currently imagine.