HI Ben
These and other reasons particularly how Shopify POS treats partially paid items (and the limits it imposes) are why we will not use Shopify POS. I love their ecomm but hate their POS. I’m exploring QuickB**** POS and ACE POS, both have functions of a real robust POS (both are ugly 
- but I’m studying/researching how they integrate with Shopify ecomm. Good luck with getting Shopify POS to listen.