Not necessarily requesting this as I think it goes beyond what this mod set out to accomplish, but would it be feasible to just have an extra, blank slot that isn't visually displayed and cannot have any items enter into it, that allows you to press R to "holster all" (which is actually just switching you over to that empty hand slot that cannot be filled), and then pressing 1 - 0 will switch you back to an item? It's always bothered me that we can't swap to our hand slots conveniently, and while this mod helps immensely, it is a bit of a bummer that you still have to open your inventory to retrieve the stored item when you want it back.

bwoah

yeah there's so many cases where something will only work from an open hand, even in bizarre cases like removing pottery from a pit kiln with a stack of the same item in your hand, needed this badly

Perfect mod, no notes

I use this non-stop every play session. I rarely remember the Shift+R combo, but man, I can never play without this again. Please never stop making sure this works with new versions. Truly ought to be a vanilla feature.

Such a simple idea, yet an amazing addition.

This is an awesome idea! 

This is a godsend. Thank you very much. =)