I'm sure they have improved the product by now to some degree. In the mid 80s one of a few developments I worked in tried OSB to cut costs, it failed.
At the time even though it was "KNOWN" that OSB had an exterior face and interior face, once any significant amount of water got into the board it swelled like a sponge and then flaked apart. It was a costly and time consuming mistake requiring removal, disposal and replacement.
In an attempt to recover damage costs and place blame the developer tried to prove the material was installed incorrectly, it wasn't. Then the board had a glossy ext. face and a matte int. face. The glossy face was a water/moisture repellent.
It probably wouldn't have been an issue if the structure could be enclosed, (Tyvek papered or tarped) before any repeated normal or extended rainfall occurred but that isn't/wasn't conducive to condo development.
Never bite the hand that looks dirty!
The more you know the more you're worth