I bought this because the price was right for making a shelter I wasn't sure I'd like. It cuts and sews pretty easily. Some rules I've learned - 1) when sewing a zipper into a panel (like the panel of my net tent), cut the fabric a little long (I lost about 1.5" over a 6.5ft section), then trim to the correct length if necessary after you are done with the zipper. I've also read that running some scotch tape along the seam area will help prevent bunching as it is pulled/pushed by the feed dogs and foot. I'm sure a walking foot would help too. If you are sewing it to silnylon, and it is on top when you sew it (i.e. sil is being pulled by feed dogs), it will have a tendency to stretch a little.
It doesn't feel as nice/soft in the hand as the .5 OSY noseeum ("nanoseeum"), but I think the product is well priced, and will do the job for a near neglible weight gain. I've read it is not as durable as the lighter stuff also, but I don't have any experience with that, and I tend to treat my light weight stuff with care.
Built into a 7.7oz. "tent" with membrane silpoly pu4000 floor (a little "too" light), 74L" x 24"W x 40"/20"H to match my membrane silpoly pu4000 flat tarp.