I call that because it saves me a manual step to verify that I'm using the right CCS. If my chars are in aftercore/casual (and several other conditions are right) they'll auto-run a bounty as the final step in their login script. kain.ccs (as an example) uses FTF/SS/casualcombat and will exploit my olfaction and occasionally putty to complete a bounty hunt. If I was previously basementing, that CCS (basement.ccs) only contains the expensive (120mp) hobopolis spells and noodles ... that I wouldn't want cast at a goat or an astronomer.
It's a little overkill probably, and I could, if I tried, smash it all into one CCS, but I'm lazy and this works for now.