Ok, still looking for a vendor to release a decent stand-a-lone POS installation that can stay in sync with our main M2 site. I say stand-a-lone because our POS systems will be secluded from public access, but can still be connected through the internal 'net.
Wishful thinking, but we're willing to pay for that wish to come through.
Ebizsmarts has a pretty decent POS system, however I don't think it's stand-alone and (yet) M2 compatible. I'm adding it here just in case as a reference point anyway.
Thanks - I did see them. The only bad thing is that it's strictly for iOS products (something I refuse to have any where in any of my companies). In my opinion, the lack of a commercial M2 POS by any of the leaders also leads me to believe that M2 development of new products hasn't caught up yet with the demand yet.
I've found others with road maps and time lines out towards Q2/3 of 2016 which seems so far away still.