Welcome to IRL, an ongoing feature where we talk about the gadgets, apps and toys we're using in real life and take a second look at products that already got the formal review treatment. Different strokes for different folks. While Darren may have long since sworn off tablets as productivity machines, our very own Billy Steele (a designer by trade, don'tcha know) has been using one to workshop projects with clients. For Darren, anyway, productivity means having a laptop with a discrete GPU at the ready -- except for when the GPU drains his battery life, which is where an