Omega Lusterboard

While checking out our local surplus/salvage store I came across 3 4'X8' sheets of Omega Lusterboard. This is a signboard made of appx. 5/32nd plywood with a sheet of white painted aluminum laminated to each side. It is very solid, and very flat. The best part, is that it is only $35 per sheet, which is about what 5/32 birch plywood costs.
I called the company rep to ask how it holds up outside, and he said as long as the edges are sealed, it will last forever. The white paint should be good for at least 10 years. I told him what I might use it for (the sides of a teardrop), and he didn't see any problems.
Does anyone out there have any experience with this product? I am thinking about using it as the outer layer on a sandwich type wall. The only problem I can see, is that it might be hard to get glue to stick to the inner framing, unless I roughed up the inner aluminum with a sander or something.
making a wooden sandwuich, then screwing the ctoss braces, and such in, before applying the aluminum skin would be a little easier, but considering the cost of aluminum and plywood, this seems like it might be worth a little extra work, not to mention that it is FLAT
, unlike some of the plywood I have had to work with.
I would appreciate any comments or suggestions.
Jeff
I called the company rep to ask how it holds up outside, and he said as long as the edges are sealed, it will last forever. The white paint should be good for at least 10 years. I told him what I might use it for (the sides of a teardrop), and he didn't see any problems.
Does anyone out there have any experience with this product? I am thinking about using it as the outer layer on a sandwich type wall. The only problem I can see, is that it might be hard to get glue to stick to the inner framing, unless I roughed up the inner aluminum with a sander or something.
making a wooden sandwuich, then screwing the ctoss braces, and such in, before applying the aluminum skin would be a little easier, but considering the cost of aluminum and plywood, this seems like it might be worth a little extra work, not to mention that it is FLAT

I would appreciate any comments or suggestions.
Jeff