[quote lafinfil]My first thought was Pelican top loader like the 1430
http://www.pelican.com/cases_detail.php?Case=1430 but it might be a bit bulky.
My second thought was a good soft side cooler and outfit it with some insert organizers from Domke
http://www.tiffen.com/domkecat33.htm
I have used soft sided coolers for a variety of things for location shoots in bad weather.
You can get them cheap and they collapse when not in use. I have a bunch on Domke bags
so I just pull out the inserts and arrange them in the coolers.
It also lowers the theft potential - coolers dom't scream expensive photo gear.
a fellow photography student back in the day converted a full size Coleman cooler to be his view camera case. No one ever gave it a second look. Cost less than $15 total.
Who is looking to steal someone's baloney sammich anyway?