Logic tells me that Warbonnet wouldn't be selling a 1.1 rated to 185# unless it was capable of withstanding long term use, so I should be good.
On mine the stitching is just to finish the edges so it doesn't rely on any of that for strength. Used it last night but had a hard time sleeping. That's common for me so I don't know if it was because of the hammock or not.
I think my next project will be a 1.7oz single layer but this time I think I want to make a Hennessy style asym.