OK - so my idea wasn't great one. When you boot into emuNAND the hbmenu is set-up. therefore emuNAND is never clean. The only way to stay clean curently is to use the internal NAND.
i hear you. i'm just thinking, my switch is on 8.0.1 stock FW and who knows, if a softmod comes out in the future that can autoboot CFW without RCM i'd like to hope i'm not already patched out!
Is it worth keeping my CFW on sysNAND and a clean build on emuNAND? I wont be updating my FW on CFW and it will let me update my clean build without burning fuses.
Any possible issues with this approach?