I finally tried Mr. Mamas. It's the #2 restaurant in Vegas on TripAdvisor (as of the writing of this review). The most outstanding thing is the number of hardworking people in this restaurant, a large number of workers who are all busy. Second, everyone is incredibly friendly, and you probably won't get in or out of the restaurant without a very cheery welcome and thank you. The service is spectacular.
The food: pretty standard breakfast fare -- no exotic options here. I went with chicken fried steak. The steak seemed a little pre-fab (my only complaint) but was very well seasoned (thank you!). And the gravy was excellent. Homemade and tasty (I had been to another restaurant in the previous week that had average gravy and was disappointed).