Water proof sheathing. Has anyone seen it?
If you are considering using it for stucco, make sure it is approved by the local building officials.
Many municipalities are slow to accept anything other than the traditional three coat system (sometimes the modified two coat) over previously approved wall sheathing systems.
If you are in an area without the synthetic stucco and/or the very, very, very common faulty window installation problems, it may be easier to get approval.
The problems I see are automatically ignored by insurance companies if any substitutions are made. Municipalities requiring stucco inspections are very slow to allow substitutions.