I have seen it, but not bought any of it. Are you on Ravelry? If so look it up and look at the comments. Everyone says it's very soft and drapey (aka droopy which is normal with bamboo), but some said it splits and some said it sheds and some said it 'worms' which apparently means it bunches up along the main thread of the yarn.
I'm not sure shedding and drooping is a good feature in a coat, but if you knit it tighter than normal it might be okay.