Instead of concealing exposed ducts, you might:
Add a decorative touch by painting or using adhesive vinyl film.
Install a wood or metal casing around the duct to create a custom look.
Incorporate the exposed duct into the overall design of your space through an industrial or modern aesthetic.
Now that you have a solid grasp on the common questions surrounding heating ducts and drywall, move forward with confidence in your home improvement projects. Good luck!