These edge of the screen swipe sidebar apps were a huge fad for me a few months ago but after the novelty wore off I kept finding that they weren't actually speeding up my time navigating the phone. It was no faster to use these apps than it was for me to keep an efficient homescreen and use Jellybean's existing and already excellent multitasking screen. That's not accounting for the number of times that the edge of screen swipe detection didn't pick up my input the first time. There was also the factor that in most of these apps, it's a 3-step process: Swipe the edge, and then scroll down the list for the desired app, then launch it. I can do that in 2 faster steps using Android itself: Either Press Home -> launch app or Press Multitasking -> launch app. It all depends how you set your homescreens up though. All of my regularly used apps are on my main screen along with calender/agenda widget and clock. I only use one screen. For those of you who have a ton of widgets spanning across multiple homescreens, I could see apps like these being somewhat more useful to use
For the record, I have used Glovebox, Swapps, Sidebar, Swipepad, and Wave Launcher over the course of half a year, which is a good and long period of time to come to this conclusion.