Webbing: Poly vs: Other

Heya builders and alike,

Do I have to use polypropylene webbing for the straps or can I use a different type of material?  I came across this website and think that I'll be safe to use nylon:  http://www.drdcorp.com/strap-cord-hardware/strapchart.htm

 Thoughts or concerns?

 -Rob 

Nylon's fine.

Laszlo