We've been desperately needing this functionality as well, but sadly something that seems so simple is still missing from Shopify. I have been through the forums, it has been requested for many years and I can't figure why Shopify wouldn't add this in. Even being able to use the Compare At price for POS would do the trick for us.
The suggestions by the "Shopify Gurus" that we duplicate all of our products and sync the inventory via an app is just not a viable solution. This may work in a limited manner, but we are also interfacing into an accounting system and a further job management system, and any stock changes generated in these cannot be synced by an external app to the duplicated products.
We are seriously considering another platform that allows such a seemingly simple function.