:) we finally got approval to build rv garage and workshop on property contractor asked what I would like on walls. sheetrock or OSB he said he liked osb because I could nail to it. isnt osb sort...
Yeah, standard OSB will lite up as quick as any dried lumber.
If you like the look of the sheet rock, you could always spray the OSB white or your preferred color. It will maintain an OSB texture through the paint but could help make it look a bit more finished.