Well.. the Nami Iaito arrived today (sunday.. wierd huh?). I've not had much of a chance to look at it yet but:-
a) Everything seems solidly put together (on the Iato itself)

b) It seems very 'workman like' and has an authentic feel..

c) The hamon is very prominent

d) Its as light as a bokken, but much better balanced (as you say, its C.o.G. is close to the tsuba).. its going to be very easy to handle.

e) Its reassuringly blunt (about as sharp as a butter knife)

f) One of the fittings (a small metal lug where the 'strap' is attched to the scabbard) has come loose in transit.. It looks like it might need a small dab of glue to secure it.

g) The blade is covered in 'gunk'

h) There are a couple of important looking leaflets in the box that we probably need to look at.. they're probably to do with maintainence.