Imagine if Snapchat said "if you download the sideload version your snaps will continue to auto delete, but if you download the Official App Store version, every snap you send will be stored forever and never deleted from our servers".

I can tell you right now which one, Kristie, the 17 year old High Schooler is going to download. She'll then unknowingly be giving away all sorts or privacy away on the sideloaded version, under the guise of a marketed, more "in your face" privacy feature.