It's the first I'm aware of. Doesn't mean some haven't been doing it unannounced, though.
Have you got a policy for how you account for big exchange rate swings? The expectation is that the swings will lessen with time, but we're definitely still in ski-jump slope territory now in 2013.
To be honest we're not expecting a huge amount of Bitcoin-paid business as we don't handle personal effects, but it's our intention to hold funds in Bitcoin rather than exchange for fiat. If trade volumes are significant we'll need a different strategy since none of our suppliers currently accept Bitcoin. In that case we'll probably use Bitpay.