I'm just thinking of the actual discussion around the table here. Most groups I've played do pretty much all conversation in-character, so this might be a bit awkward. Especially if the other characters want to tell my rogue to stop whining about his dailies and get going. It's a tactical conversation that the characters can't have (because they don't know, under this justification, that they've "used up" their daily powers) but will probably come up fairly frequently for players. (Shelly already mentioned it on one of her articles, in fact.)
So you're forced to either stop roleplaying and hash it out out-of-character (which is also problematic because players might have different tactical priorities from their characters), or else have an entire conversation in weird in-character innuendo.