Did you panel mount them using these (http://www.powerwerx.com/powerpole-accessories/powerpole-outlet-cover-plate-electrical-box.html)
in one of these (http://www.powerwerx.com/powerpole-accessories/powerpoles-chassis-mount-4-sets.html)
What are they like to plug and un-plug - i.e. is there a clip you have to squeeze or something and does it require much force?
Does it feel like they'll be good for a ton of cycles without breaking?
They go together like Lego pieces.