See I'm not bothered with the pressure sensitivity. I used the surface pro 3 for notes in uni and I know the plastic nib made it less "real".
Yes, this is what I'm gathering from all your feedback so far, that the feel of the nib makes more difference to the note taking experience than the level of pressure sensitivity.
As for the Bamboo Ink, I don't think you're alone in not noticing it. Wacom seems to have put a veil over the whole product release. The only thing I can find is a couple of reviews and the product page on Wacom's site. And it seems that you can only buy it through bestbuy.com.
I've found it mentioned by other vendors, saying it might be released in July 2017, but nothing more.
Not sure what all the mystery is all about.
Another thing that I came across was what Mike wrote back in November '16 (in this thread)
Maybe this has changed since then?