Space in my Kelty is getting tight- any good ideas for a supplemental low-profile bag that I could strap to the outside of the pack and could handle 4-6 5x7 holders? I saw some MC Gear 5x7 filmholder bags on ebay, but they don't exactly get rave reviews- http://www.largeformatphotography.in...ad.php?t=47800

Does anyone know if the Photobackpacker side pockets for the new Kelty P1 pack might work with an older Redwing 3100? Or would the new cascading style bags be durable enough to strap to the outside of the pack for long rainy hikes?

I have an email in to Bruce @ RPT, but would also like to hear from folks with experience with them. Thanks!