Preheat broiler. Rub sirloin with steak seasoning blend; sprinkle with salt and pepper. Place meat on an unheated broiler pan. Broil meat 3 to 4 inches from heat for 15 to 17 minutes for medium rare (145 degrees), turning meat over halfway through broiling time. Tent with foil and let stand for 5 minutes.

In a medium bowl, combine blue cheese and Caesar dressing. Add romaine and cherry tomatoes. Lightly toss to combine. Cut steak into thin strips. Arrange one-fourth of salad mixture and steak strips down the middle of each tortilla. Roll up tortillas. Serve immediately.