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from my relatively short experience with it (a day so far), it is very soft, and therefore forgiving. behaves like felt or leather, but doesn't need backing. it's hassle free, and really cheap.
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I got bored this morning, and took a bit of balsa and coated the surface in mineral oil. then i sprinkled some CrOx on it. It "settled" in about a hour.
Now it seems a little more forgiving....

You should go ahead and try it if you can. I did this week, granted I had a little packet of CrOx powder. The strip of balsa set me back $2. 3" wide 3' long. So far as I can tell it works well.

I...