Austrian tradition goes vegan.
the historic theories:
The dish may have originated in Milan, northern Italy, as cotoletta alla milanese, and may have appeared in Vienna during the 15th or 16th century. According to another theory, it was introduced by Field Marshal Radetzky, who spent much of his life in Milan, in 1857. The term “Wiener Schnitzel” itself dates to at least 1862.
(via wikipedia.com)
the vegan facts:
if you prefer your cow alive and enjoying a nice snack of grass on a green meadow, you still don’t have to say good bye to this traditional Austrian dish, or rather THE traditional Austrian dish.
you could go to Formosa and have a crispy and delicious schnitzel as big as your head with a side of creamy potato salad.

you could have a Schnitzel in a burger bun at St. Josef for a quick snack, enjoy some almost-authentic Irish pub atmosphere at Rupps, while enjoying a nice slab of breaded wheat gluten, wait for Mondscheinstüberl to finally re-open this fall and eat some Austrian cuisine there.
see, vegans and century old traditions DO mix, you just need some creativity and a slab of wheat gluten.