While Apple loudly touted the switch from Lightning to USB-C on the new iPad Pros last week as a boon to professionals, there’s still one category of devices that will be left mostly out in the cold for now. As The Verge’s Nilay Patel points out in his review, despite the USB-C port, external storage devices still don’t play any better with iOS 12.1 on the new iPads than they did via Apple’s USB-to-Lightning connector on prior…