i have run them outside at red rocks for mmw/sci last fall. i ran lower than most of the small dia guys, and ran ortf hypers from 20 rows from stage. my tapes smoked everyone else's that i've heard. there was far less wind on my recordings than other folks.
my point is this, don't be afraid to run xy or ortf for the outdoor shows. the card/hyper pattern on the tl's is awesome, very forgiving, and provides as much of the all around sound we get with the outdoor shows.
i doubt ill run splits for any red rocks shows this summer. certainly wont run splits at the mish.