Thanks for your reply David, I was considering just a basic half egg shape for under the hammock, wrapping halfway up the sides of my Clark hammock so as not to lose the access to the pockets.
I understand better what this fabric actually does, not having any in hand, from your description. I'm not a VB fan, so I'll pass. Tried it in the '70's, and did'nt like feeling damp all the time. I suspect it was being used at the wrong temps, or wrong times, or?' which added to the futility of using it; and hence it's lack of popularity.
I tend to prefer TecTron DWR spray for my gear as it's worked for years on all manner of gear items.
Yes, the pricer fabrics are out of my gear pocketbook at this time.