In a small bowl, combine the red cabbage, apple cider vinegar, sugar, and 1/4 teaspoon salt. Toss well and set aside to pickle while you prepare the meatloaf.
Heat the smoker to 250°F. In a large bowl, combine the ground beef, chopped bacon, panko, egg, onion, 1 tablespoon ketchup, 1 teaspoon yellow mustard, garlic powder, smoked paprika, 1/2 teaspoon salt, and black pepper. Mix gently just until combined.
Shape the mixture into a compact, low loaf on a piece of foil or a smoker-safe tray. Place it in the smoker and cook until the center reaches 160°F on an instant-read thermometer.
While the meatloaf cooks, stir together the mayonnaise, 1 tablespoon ketchup, and 1 teaspoon mustard in a small bowl. Cover and chill until ready to serve.
Warm the flour tortillas briefly in a dry skillet, turning once, until soft and pliable. Keep them covered so they stay warm.
Transfer the cooked meatloaf to a cutting board and let it rest for 5 minutes. Break it into small chunks with a fork. Drain the pickled cabbage.
Divide the meatloaf among the warm tortillas. Add shredded cheddar and pickled cabbage, then drizzle with the burger-style sauce. Serve right away while the tortillas are warm.