Flipping or rotating pads?
Yes, as long as they are not different. 

It makes sense that the actuated side wears more as it does most of the work. 

Just bear in mind that some pads are directional, but you haven't posted which pads you're usring. 

One thing you should think about though, is how far the static pad can be pushed. Some cheaper mechanical brakes only have a limited amount of movement and if you bottom that out, then actuated side won't be able to push far enough to hold it. Again, this is a general statement as I don't know which calipers you are using. 



Edit

You can physically swap the sides from Tektro A10.11 pads. Everything else from above still applies, ie about brake caliper limits.