Hardipanel for shed siding

We are planning construction of a garden shed to store garden tractor, yard tools, and "stuff" (and regain use of my garage shop). We are considering Smart Siding, Hardi Panel and T-11 (T1-11). Like the looks of T-11 but have been unable to find pressure treated siding used on some factory built buildings.
The Hardi panel looks good but their installation instructions required a moisture barrier. This is a utility building and the siding will also serve as sheeting. No interior finish. Will the cement fiber panel hold up to long term use without sheeting and moisture barrier? I have used a product similar to Smart and the building looks good after 25 years but there is concern with Hardi.
Any Experience?
RonB
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Just my opinions with no basis in fact.
The moisture barrier would be required over a wooden substrate or heated interior. You have neither.
No interior wall finish is only a problem when one considers bumps and breakage potential.
I might cover the studs with 15# felt or plastics as I believe the cement based product might conduct some moisture during the rainy season and at ground level
They have a contact form on their site. May I be so bold as to suggest you ask them.
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Colbyt
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