Hi all, long time lurker first time poster. I just have questions today but hopefully can post my learnings when i start my dream house build this spring!

Getting ready to build a timberframe with a osb sip skin, probably using Insulspan.  I have been concerned about the osb skins getting damaged by water some infiltrating the exterior (not a big fan of osb). Has anybody used or heard of this product?
http://www.stosales.com/allweb.nsf/sgvswraps

It looks pretty attractive to me since it is applied directly to the osb and it "breaths" .  Do you all think it would be good to use in addition to tyvek?  how about on the roof panels ?

Thanks!

I don't know about this product, and hopefully you will get some feedback on it but I do want to say that your concerns on moisture are valid. You should study up on furring out your siding and leaving a drying air space between your siding and osb. I used wood furring with decent results,but I have since learned of a metal furring product from "furring master" (Google). If I had to do it over I would probably use that stuff.