Just curious what everyone's opinions are about the signature cleaner. I usually have no problem getting marks/ light stains off by using baby wipes but my SA insisted that Sig cleaner was the best and gets ANYTHING off and that I should have it handy. She seemed shocked that I was going to buy a new sig bag without getting the sig cleaner as well. Do you find this true? Is it best for the TOUGH stains? Or is my SA just showing off her good selling skills? I'm guessing the latter. TIA!