The only purpose for this program is switching between GPUs on a hybrid setup.
Not really. mhwd installs a configuration plus the driver. The driver is the same.
That is more experienced users since you can customize a lot of things. I would rather suggest looking for the optimus-manager.
For example:
Of course you need to install the application first:
pamac build optimus-manager-qt
sudo systemctl enable --now optimus-manager.service