Question for the HMG owners out there, do you use/need a rain cover for your pack? I'm just about ready to pull the trigger on this pack (as soon as I decide to get the 40 or 55L) and I wondering if this pack is as dry as they say. I'll still put my bag in a drybag because I'm paranoid.

I'd like to hear what owners have to say, god or bad about these packs.

Thanks!