Definitely worth building! While I don't use mine a lot, I love that I have it, and it is GREAT for travel as it doubles as a grill or smoker. I've done some reverse-sear hot wings on mine which were out of this world. Smoke them for a while indirectly, then simply remove thew tamale pot and place rack directly over coals i.e. standard grill setup. That's one thing that's really cool about these things is you can literally go from smoking to grilling on the fly, and there's plenty of room for two racks in there. Plus adding coals is easy and you don't lose much heat from the tamale pot if you do it quickly. The only drawback I've found is wind will kill your temps, especially in the winter so you may need a three sided wind block in these conditions. This is only a minor issue though.
Go for it, you will be glad you did.
Go for it, you will be glad you did.