It's an interesting book but not one I would read a second time. It can be a bit difficult to read at times, since Brown tends to jump around with his writing styles. I'm sure it's meant to have some literarry purpose, but I just found it annoying.
Yes, it is available in soft cover (at least it has been in the South Pacifc for nearly a year now). So I would assume it is here too. There is also the illustrated version, however, if you are wanting compact, that definately isn't the route to go
There are some verifiable facts in the book, along with a lot of fiction, and a whole bunch of things which can be left up to an individual to determine. Not sure why the church is so up in arms. It's just an author stirring the pot and finding something that sells. It's every bit as believable (or unbelievable) as the bible itself. Take it for what it is worth, and use your critical thinking skills to come to any conclusions you choose.