Both Klickfix and Ortleib style mounting plates are pretty easy to attach and remove from the handlebars BUT the screws for the clamps are self-tapping style and bed into the plastic. If you keep removing them, the screws may become loose and not fasten tightly. You can get replacement clamping bands.
The mount is held in place by the warparound cable so the clamping bands dont need to be very tight.

I would suggest that you minimise the removal of your mounting plate.
Other styles of mount often have more massive clamping arrangements and no supporting cable. The metal ones are probably better suited to regular removal but in my opinion, no mount system is as quick and secure in quick-release use as the Rixen and Kaul/Ortleib.