How does the clicking part work? Do you double-tap the touchpad like on a laptop, or use the face or shoulder buttons?
The one thing that will bug the OCD part of me to no end are Sony's face button labels. Not really insurmountable though, as there's the option of buying a modded DS4 with blank face buttons.
edit: Here's the one I've got optioned out, that gets rid of the "Sony-ness"