pelican cases are a good case if you're just doing some basic traveling (and don't mind lugging around a plastic briefcase) but trust me, carrying that thing around all day on the mountain would be a complete bitch and fairly impractical.
i use a dakine sequence bag and i've been nothing less than stoked on it's performance protection and durability thus far. on any given day i'll be carrying the following:
canon 40d with battery grip
50mm
70-200mm
15mm fisheye
2 pocket wizards
530ex flash
lens wipes
cables
battery chargers
tripod
zip ties
small mini dv cam
alienbees strobe head
lightstand
vagabond II power pack
and often times other small pieces and parts. and it all fits in or on the bag. i attach some of the bigger stuff like the strobe bag to the sequence with a carabiner. i don't go light on the bag whatsoever, i stress the zippers, attach a ton of extra weight to the outside straps of it, set it down in snowy muddy parking lots, and frequently toss out 4 letter words when dipshits decide to make turns too close, spraying all my shit in my bag as i'm trying to setup. still has held up great and it's on its 2nd season of such abuse.
i also know that erik seo uses f-stop gear, and he raves about it. there's actually a really cool testimonial about their quality from his blog here:
http://erikseo.com/blog/2008/reviews/glad-to-have-luck-and-good-gear/
i've seen more than a few other photographers using the sequence as well. i've heard some good things about the ogio stuff, and some bad things. never have it used it myself tho so i can't form too much of an opinion.
hope i helped