Thank you everyone for your input! The OTS maps are very reliable and do not post any risk factor above a protune. The OTS maps are much more on the conservative side of things and are designed to work as reliable daily driver performance maps. There are some cases where we would suggest getting a Protune, for things like racing, HEAVY track usage or modifications that fall outside of what the maps are meant to be used for. This is most commonly due to intakes, catless exhaust systems or other tune-altering modifications.
To directly answer your question, if used as directed, the OTS mapping is perfectly safe for your performance and daily driven Subaru.