The flip side of this is that credit cards are handed out like candy to basically anyone with a decent credit history (and several people without). I would go the CC route; if it's just for a month until the paycheck hits you might even make it under the grace period, and even if you don't, if you pay in full over the next month or two the interest is negligible.
He'll likely find both no grace period and a fee for cash advances but, either way, it will probably cost less than $250 to borrow $2k for 6 weeks. (I am broadly supportive of your advice to smooth out temporary cash flow issues with financial services. That is what banks are for. Obviously, one does not want to make a habit of this, as cash advances are very expensive ways to access one's credit.)
