After working with a dual-screen portable monitor for a month, I’m a believer

Having two displays in a single device is a growing trend that appeals to people with limited desk space or who need extra pixels to work with when on the go. But often, dual-screen devices, like laptops, are loaded with trade-offs that detract from the convenience two screens should provide.

I've tried using dual-screen laptops as my primary display/computing device before. But if I were to buy a dual-screen gadget today, it would be a dual-screen portable monitor. After spending the last...