Yes. There is nothing wrong with using two pins on the desired hingeline of CA hinges to index the hinge properly between the two surfaces. In fact when I do use pins for indexing I use two anyway to prevent the hinge going at a poor angle which happens often when a single pin on the hingline is used. There are also round cut CA hinges out there and these of course a single pin does the job nicely

I do not use the pins every time and often you can just control any slippage just by how you squeeze the first surface as the second surface is being slipped on. Its a feel thing.

John