I've read the only drawback, in these times of instantaneous gratification, is that it takes a few hours for it to come up to baking temperature
I've been eyeballing some designs that incorporate a rocket stove, basically you fire the oven from below and the heat comes up an entry in the back and then heats the front. The main advantages I can see is that it heats a bit faster, and you can fire it with smaller trash wood. It's somewhat more complicated to build though.
I only have one book on the subject. It's ok if you like meandering stories that never seem to get to the point and doesn't talk about oven design all that much except some anecdotal stories about building some. Yeah I was mildly disappointed in it. Perhaps more of a "don't buy this book expecting to learn how to build wood fired ovens"..
The Bread Builders: Hearth Loaves and Masonry Ovens [Wing, Daniel, Scott, Alan] on Amazon.com. *FREE* shipping on qualifying offers. The Bread Builders: Hearth Loaves and Masonry Ovens
www.amazon.com
We recently (in geological timelines) got a big green egg clone ("Pit Boss" from Costco - more of a Large Blue Ball). I've been using it in lieu of a pizza oven. It's charcoal fired, but now that I can make my own that's not so bad. It has a lot of the same cooking properties. One thing I've found is that if you plan your cooking day you can really utilize the residual heat efficiently. Last firing we did I started with rustic bread, then did some more regular loaves, then dropped the grill, tossed in a handful of fresh charcoal and cooked some wings, finally wrapped some spuds and beets (separately) in foil and put them in alongside a giant pot of beef cheeks in tomato/red wine/carrot/celery/onion braising liquid. When the cheeks were near done I threw some green beens on top to sort of steam for a wee bit until just tender. That was a relatively efficient way to use basically one firing of charcoal (except a wee bit of extra heat for the wings). I've also done roast chicken or slow cooked ribs or brisket after the bread/pizza firing.