Is Outdoor fabric viable?
 

I have fallen in love with this fabric. Has anyone used outdoor fabric for a quilt? Results?
https://images.fabric.com/images/400/400/0458709.jpg

Did you want a quilt to wrap up in? Or just a wall hanging? It is probably thicker and contains chemicals to resist the weather. I'd use it for a wall hanging, but not to cozy up in.

Is the fabric washable or dry clean only?

It would make a great picnic quilt. Perhaps paired with a denim backing.

I have outdoor fabric which I find while using it makes me sneeze alot so something within the fabric I'm allergic to. I used mine to make a scrappy cushion cover, a couple pillow covers and a bench cushion. They've been outside during the summer for a number of years and for whatever reason this past summer a squirrel decided to chew thru 3 out of 4 of my pillows on the wicker chairs. I try now working with this fabric any more than I have to due to my reaction to it.
Sitting on it has no effect on me though.

It would handle in a similar way to the denim jeans quilts. Reminder - quilts of old were made of whatever fabric was available - it all works, it just handles differently. Because it is thicker, I would use either no batting or a very thin batting. Often times I will only use wide flannel for projects like this because I want a little something to buffer the seams but not add too much bulk or weight. And, while I am not one who usually prewashes, whenever I use flannel for anything, I prewash everything.

Thinking outside the box is always encouraged, but be sure that the fabric is not too tightly woven to quilt. I have used some outdoor fabrics that are just too tight and tough for quilting.

That's lovely fabric. I'd wash it first (might need a big machine, like a laundromat) so it wouldn't be so stiff.