Well, as always i'm looking for a bag. I've been using a Think Tank Urban Disguise to carry all the gear shown in my signature, but it's getting heavy (and crowded). I was thinking about setting up task specific bags anyway.
I'd like to carry my 40D(with 1 one the following lens attached), 10-22 w/Cokin Pro Z adapter mounted, 50 1.4 w/Cokin Pro Z adapter mounted, 24-70 w/hood stowed, either a pocket to hold the Cokin Pro-Z and filters or an attachment point to put an accessory pouch, 1 flash, and the usual batteries, memory, etc.
Right now its a pain to swap lenses having to put the filter(s)-holder-adapter somewhere then swap it all over to the other lens, plus usually everything is packed away in one of the many pockets the UD40 has. My thoughts are to put a Cokin adapter on the 10-22 and another on the 50 1.4 then using a LensCoat Hoodie or Op/Tech Hood Hat as a front lens 'cap', then at least swapping lenses will be easier.
But...a bag that could hold the body w/lens and filter holder already assembled would be even better, even if only for a brief walk between setups. I usually put the camera in the bag since most photo trips involve being on a bicycle between setups.
So, How do you landscape guys do it?