Igorrock, with all due respect they wouldn't last a month in Spain, let alone Africa. Here is something cheap that works, well it has done for me for a while and is a lot easier to sharpen than the Benchmade Osborne !!

http://www.gerbergear.es/Hunting/Knives/Gator-Knife_06064

Have used one for camping and fishing in UK, no complaints
best
Mike