I haven't actually had mock duck at Sante. Didn't realize that had it! I like their risottos and vegan pancakes.
As for Kung Pao Bistro, I go there all the time. It's right next to the Whole Foods I frequent. The problem with those mock meats is that often come from overseas, so there's no ingredient listing and so forth. I did talk to the manager, who is a really nice guy, and he insisted there were no animal ingredients. So, to reward the guy for having such an extensive (and even separate!) veggie menu, I give him the benefit of the doubt. And I'm glad I do! The Veggie Orange Chicken is awesome, and you can use the same mock meat instead of beef in their Beef w/Broccoli recipe, too. I haven't been there in a while, and now I'm craving it again. I'm trying to eat more whole foods, and less textured protein-based stuff.
Have you been to Astro Burger at Melrose and Gower? They actually have a vegan menu!!!