I have never used this product and have some questions.

Does it iron on like Coverite or film coverings? I use nitrate dope to fill the weave? How does it handle compound curves?

It has a looser weave than the Stits lite. All the Stits lite paints will chemically bond to the Koverall. Be sure to stay with one method or the other, meaning if you start with dope then stay with dope. If you start with the Poly Fiber system then stay with that system.

As for covering compound curves, use a calibrated iron NOT A HEAT GUN to shrink the fabric. The first shrink should be at 250 degrees and the final at 350 degrees. You can cover a bowling ball without wrinkles if you have the time and patience. All the hints and tips at http://www.stits.com will apply to the Koverall fabric.

Koverall is a wonderful product. Paint your framework with nitrate dope. You want to just paint the perimeter as you want it to move in the center when shrinking. Give it a couple good coats with light sanding between coats to take away hairs and bumps. Then you lay your covering on and attach it with more nitrate around the perimeter. When its dry you shrink it with an iron and you can smooth out the corners with the iron. When done according to the instructions, you will have a nice drum tight covering. You must lay it out length wise on the wing and fuselage, so order accordingly. I like to have two of the large packages on hand for a 100"+ monoplane.
The one thing nice about a painted surface is you will never have to deal with wrinkles and sags again. Try it, you will like it.

Yes, this is a GREAT covering material!!! I have used this to cover open frame work for as long as I came remember. Prior to Koverall, I used "silk" to cover my models, that was a difficult task to say the least. Koverall is easy to apply IF you follow Sig's instructions. Here is a copy of those instructions