I've seen video and read stories about people overlanding in vehicles as minimal as a 2 cylinder Morris Minor, a simple 4 cylinder Land Rover Series, to stock volkswagen beatles or outback subarus.
I don't think is matters what your truck is or what the aesthetics are as long as you are out exploring, having fun, treading lightly, and sharing the fun with others. Jeeps are generally (and I mean in the public eye) associated with "off-roading" ... and the line is sometimes fine, to grey to blurred as to what is overlanding versus off-roading. In my eyes, someone travelling the Alaska Highway pulling an airstream is as much an overlander as someone driving through the jungles of panama. It's more about the spirit of travel and seeing the world than it is about what you are doing it in.
You want teeth on your Jeep - have teeth on your jeep. You want limb-risers on your land rover, put limb-risers on. One serves a purpose and looks cool. The other ... looks cool ... or not.