The Draumr Double straps are sturdier than the Draumr 5.0 straps, they are also less prone to stretching. Using the Draumr 5.0 straps on the Draumr Double will work, but you will experience more stretching and it will be harder to calculate the sag of the hammock when in use. Using the Draumr Double straps on the Draumr 5.0 is no problem.
All our hammocks come with custom straps, so we recommend using the straps that were included with your product.