There aren't really a whole lot of variations when it comes to "cast iron skillets." If you want to use it while camping, I suggest finding one with a folding (or at least detaching) handle. This ill also save stovetop space if you leave all your pans on the stove like I do.
on a side note: make sure you carry some oil with you to season the skillet when you are done. Find something with a high smoke point if you want to make things easy. Grapeseed oil works well and can be found at most grocery stores.
Happy camping