Thanks Nagarajan, it brings the item availability check which is a "interesting workaround" and I voted your answer as helpful.
But imagine having a list of 300 items to input into a sale order or delivery. If there was a column with the specific stock as I mentioned the users would visually instantly know what quantity to key in.
So my question remains, how can I have a column showing the quantities available for a specific warehouse, and not the overall total across all warehouses?