Why don't you run a matrix from your ua-5? You can determine by your mix/mic placement if it sounds more aud or sbd. This will allow you to get all the center tones that are hot in the sbd and the things that are more ambient with the mics. I recently did a local latin/jazz/fusion band (with a little 10 chan mixer) and it sounded great! I mic'd the rear of the stage and was able to pick up a lot of the percussion that would have been missed on the sbd, and the clarity of the keys and guitar that dominated the sbd mix. Using rear stage will get you less ambiance, but a very nice, although very SBDish recording. You should get great results micing the front lip as usual and then you could get a much more AUDish recording. If you know the sound guy, or if he is just not a dick, he should let you run your mics off his snakes from the stage back to the sbd. Nickgregory just did a matrix with his mics at the sbd 25-30 ft back from the stage and it sounded very good without using any delay. He was heavier on the mics and it sounded like a very detailed aud recording.
Matt