The answer...probably.
I have an Ohio #8 that I put a LN blade for their #8 into (not their replacement blades, but the full thickness blade).
Works like a charm. But even Tom himself was suprised it fit. If it didn't, they said they would do the exchange for the thinner replacement blade (which is still thicker than an original) and refund the difference in cost. Good folks they are.
I didn't have them make me a chip breaker opting to reuse the original. So there is a bit of slop in the adjustment, but I only adjust the pipper once or twice while planing anyway--if that.
Take care, Mike