Yes, they sell those at the beach I work at. I prefer them with mustard and ketchup both. And try not to think of what's in them. Doesn't taste like most meat I'm familiar with, that's all I can say. but they are tasty.
Chinese food's not that portable, I'm afraid. It involves a lot of rice, so plates and forks are required. Well, required for me, you're supposed to eat it with these wooden things called chopsticks, but I can't get the hang of them at all. We could get something else if you want to walk and eat at the same time?