The Samsung Galaxy Z TriFold is very exclusive and will likely remain like that - it's on sale in South Korea, China, Taiwan, Singapore, and the UAE, and is expected to arrive Stateside soon.But we managed to spend some time with one at this year's CES and we have some early thoughts to share.Compared to modern phones, especially recent ones, it's quite the brick when folded. There's no getting around that - having two folding sides and one middle one means the Galaxy Z TriFold will be a fat gadget when fully closed.However, it's not unmanageably thick, and people who'll buy...