Oh yes, I also got adventurous and made some with Italian-style fillings with mozzarella, sundried tomatoes, spinach and turkey.
I just took some chicken breast and minced it myself. Then I also chopped some napa cabbages and red onions into the mix. Then, I seasoned it and cooked it.
The buns turned out pretty good. The only thing I didn't like about it is that I let it baked too long after the egg wash. So it got a little more brown, but not burnt. Next time I'll just bake it less. Also, I find it very entertaining watching the buns rise and bake in the process. It's mesmerizing for some reasons.
I will make this again, but with BBQ Pork next time. I should present them to my mom and see if she thinks it's store bought.