I have and use my 22.5" OTG regularly. Sometimes several times in a week. I use it for both direct and indirect. In fact, I often do both on one cook (as do many others, here) by cooking steaks, chops, and even hamburgers on indirect to a pre-determined heat level, then sear (called the reverse sear). When you do that, you set up a two level fire (dumping a full chimney of lit briquets behind a couple of firebricks). On the direct side, it raises the coals up nearer the cooking grate for a great sear. With the lid on, you have a great "oven" for indirect on the side with no coals. Here is the set up when I did a picnic roast for pulled pork:
You can do ribs indirect, as well as Boston Butt, Pepper Stout Beef, and any number of things. I now have a WSM so do my smoking on it but my son, who is an accomplished griller and smoker does all of his work on his 22.5" Performer and is completely happy with it for all types of grilling and smoking. Also, you can use a plank direct for fish and chops (you absolutely cannot beat wild Alaskan Salmon on a plank - wonderful hot off the grill and BEYOND good served cold on a cream cheese bagel or toasted slice of Baguette brushed with Extra Virgin Olive Oil...
Dale53