I've had a pair(4 years, yeah the same well worn, world traveling pair) of E00924 Men's Bates DuraShocks® 8" Tropical,
http://www.batesfootwear.com/Catalog...Type=undefined
The sole is really tough, the upper is canvas/cordra. I have more boots, goretex lined as well, than Imelda Marcos has shoes,
http://news.bbc.co.uk/1/hi/world/asi...ic/1173911.stm, these are my choice to take to the field. The steel toe has saved me a couple of times from having a heavy equipment case squish my toes. They dry fast and pack into small spaces. Have I mentioned they are comfortable. I work mostly in hot climates, these might not be great for cold weather. Needless to say when I heard a had an upcoming all expense paid government trip to the desert I ordered the desert version. The Sportsman guide website had them on sale, $59 and fast shipment.
http://www.sportsmansguide.com/cb/cb.asp?a=140681
I don't get a kickback from any of the companies mentioned, these are just my experiences. Semper Gumby, stay flexible.