I have read and viewed numerous reviews of all types of packs. But, they are all for new packs and how they will be used. My question is how durable are these packs say after a year of constant use. How does the outer fabric hold up? What about the internal fabric, and the elastic webbing? The outer molle webbing being used by attaching other pockets and bottle holders? By use I mean normal day to day use and not something a G.I. would put it through. Thanks for any info.