"Neither was recommended for use on a chamois where the primary function was to wipe off finger prints prior to short term storage."
No doubt because a chamois is a lousy way to wipe down guns compared to a fuzzy piece of sheepskin. Chamois leather (a goat-antelope species) is too slick and won't easily reach into roll marks, grooves, etc.
I've been using RIG (G=grease) for short and long term storage for 20+ years. I own 5 or 6 Rig Rags - one in each safe and one in each shooting bag. It doesn't take much, you don't need to slather it on.
I'm only slightly paranoid about rust, but Richmond does have a humid sub-tropical climate. You can look it up.
edited to add: I tried silicone 30 years ago. Hated the stink and it got all over everything. And it's slippery as heck on a gun.