I do too. There is no reason why they shouldn't be able to. Not that most would want to, since larger weapons are not finesse-able, and exotic weapons are not known, and daggers are common. And as I said before, just because it doesn't happen, doesn't mean they can't, and thus doesn't mean it's not canon. There are small things we can add that are easy to extrapolate from the show that don't actually show up. I mean, they really aren't going to go through every possible form, are they?