Do you understand that Reserved and Static means the same thing right?
Well, the RESULT might be the same (except in my case), but I refer to them as:
Static IP = IP hard-set in device/ignores DHCP
Static DHCP = IP reserved for MAC in router/DHCP server
(Regular) DHCP = random IP assigned by router/DHCP server
Might not be the correct terminology, but this is how I have always referred to it

And, no, clicking the "reserve" link in the router's client list is the easy part. Going to each and every device and setting it back to DHCP is the PITA
I do appreciate all your time/help. I might just go ahead and do it this weekend if I have some free time.