This is an interesting observation. I think that Arduin can work well with any of the "old school" style games, and AS&SH clearly fits that criteria in my mind. Personally, I don't use Arduin much in OD&D, but that's a preference thing and not a "will the rules fit" thing.
Marv / FinarvynDCC playtester (2011), S&W WhiteBox Author (2009), C&C playtester (2003), Metamorphosis Alpha since 1976.
OD&D Player since 1975