I have four of his books, there are lots of amazing photos. Tricksterpup is right, he doesn't just set them up then rip them down. Actually, most of those tanks probably didn't look anywhere that nice when they originally setup. In the books, some of the pics are 4 years old or more. He is a master planner though. Take a close look at that huge tank, it has almost all low to no maintenance plants, like crypts, anubias, etc. It seems to be a theme with his larger tanks. Otherwise, scuba gear would be in order

. In the smaller tanks that are easier to maintain, is where he gets into the fast growing high maintenance plants. Also, sticking to just a couple plant species makes the tanks parameters easier to set. He tends to leave out the maintenance details in his books.
Here's my take on his style. They are striking tanks when you take in the whole aquascape. But, when you focus in the smaller areas they become less interesting because there are only a couple plant species in the whole thing. If you had dozens of "display" tanks to work with his style would be ideal because you could get all the different feelings/themes from each tank and only a couple of species of plants. But, saddly, most of us have one or only a couple tanks to work with. So, we have to cram all the dozens of plant species we collect into those tanks. If done correctly, the wide variety of colors shapes and styles can be just as beautiful, but different. IMO more fun look at the same tank everyday, because of all the little miny scapes within the whole.
On a personal note about Amano. I wish he would do more to share his knowledge base with the rest of us. He is pioneer in the feild and probably has an unbeliveable knowledge base. If he put out one comprehensive book on how/why his style works, tons of us would buy it in a second. Sadly, as far as I know he is still just getting huge commissions to set up tanks and selling premium supplies at triple the premium price on his websites. Capitalism..... then again, this is just a hobby, not a life saving medical breakthrough. But wait...........