I'll estimate I shoot 100 rounds every other month and clean with the snake afterwards using Weaponshield, Prolix, or other similar CLP. I clean the snake afterwards, dry it, and pop it back in the original plastic packaging. I clean with rod and patches once a year. This is with all of my barrels, none of which is a premium custom. Used to use rod and patches everytime, but then realized it took longer to get them shooting accurately again!
Just googled this up, from calguns:
"The military may use CLP to clean their bores but that is for reasons of convenience and logistics. Military snipers do not use CLP to clean bolt guns.
That was in reference to teflon which, when used in the CLP, could leave an undesirable residue.