So, again I have gone thru a lot of scenarios with this bolt biner being upside down vs upright ( gate swinging up vs down ). Yes, there are a few cases where it makes sense to invert it, but that is the case with anything - the exception not the rule.
I can't see the inherent benefit of it other than it's a habit that somewhere down the line someone thought "makes it safer". Personally,with the effort it takes to clean them, it is less safe, and if you're going to do it for sport you should be doing it on trad as well. If not, it's nothing more than a feel good., which is okay, I back up things regularly, but I see physical evidence that it provides any additional safety, only challenges to cleaning and extra effort by the leader to invert it.