Hey everyone, cool with so many answers!
Just to get back on this a bit - I was in a local store yesterday and felt the M9 real quick. It wasn't why I went there, I just asked to have a quick look while I was there.
I have to say it did seem quite a bit thicker than my M6, which I had been out shooting just before I went into the store. But, I have to say I liked it, at least the short time I held it in store. I think I may even have liked it more than my M6.
It did feel quite heavy though, much heavier than I expected for some reason, perhaps just because I expect plastic only because its digital. It felt sturdy though I have to say.
So yeah, initially I don't think I would be in pleased with the "feeling".