I have the huill together and the false deck attached. The hull is of heavy card stock, almost like a thin ply, it looks to be 3mm thick.
You do have to be careful handling this card stock, I bent three pieces, being a little heavy handed, but straightening it out then applying fast CA hardened it right back up.
The kit is very well done, laser cutting is excellent and very easy to cut through, and is very accurate.
The instructions are in "Polish English" and you are right, go through them several times. The pictures in the directions are a big help, especially when deciphering the Polish English.
These go together almost like a wooden model, but are much easier to work with..All I need to do now is figure out how to post pics here.
The Aleene's Tack Glue is great on the card stock, we'll see how it is with the paper stock.
The deck glues flat on the frames, so I added a little material to the middle of the deck to give it the middle rise for water run off. So far that is the only modification. I will basically do an out of box build to see how these models work.
Update
The main deck is on with a very light wash of "sandgalb" by Model Master. That is a British color, and I used it for the gun stripe on my Constitution. The second wash called for is brown, but I am going to put on a wash of "Ghost Grey", from Model Master, since most decks were of a grayish yellowish color on warships. You have to tread lightly with the washes or the ink on deck will run.