I think this video of a Japanese guy hewing with one will answer many of the questions. He starts and finishes with a heavier axe but in the middle section is using one almost identical to mine.
http://uk.youtube.com/watch?v=ueIB0h4SzHc
It cost a lot (let's say it quick then it won't hurt 150 Euros) A German carpenter friend who did his journeyman time working with Japanese temple builders bought it for me from the smith in Japan.
Pantrekeeper
1 yes laminated
2 no you don't choke up on it you hold the handle at the end see vid
3 yes
4 traditional workers tend to work unseasoned wood, it just makes sense but it will cut anything
5 not for joints more for hewing flats or notches.
6 see vid