The prints are handled and touched. Many companies make photobooks. I want an inkejet process that will make a tough print and I know it's possible. This needs to be the next frontier of inkjet printing.
-Jonathan
Even Indigo and NexPress books are a little sensitive to scratching, unless you use a clear coat as one of the colors, or use a coater after printing.
There are some inkjet processes which are much more durable using solvent based inks, but they can't deliver the detail/gamut as the printers most photographers use, and even with these the coatings can be sensitive. The problem with high end inkjet is both the ink and coating can damage somewhat easily.
It could be the z31/3200 printers may have an advantage here assuming you coated the entire print with the gloss optimizer (I assume this is an option, haven't used one of those for a couple of years).
I guess the real question is how durable ... is this a book handled multiple times daily for months? Not many books would hold up ... could be inkjet wouldn't fare that much worse. I did a book on Moab Entrada and it's held up pretty well, but it just sat on the corner of my desk and people would thumb through it when they stopped by to chat.