I'm using it on both my phone and tablet. One is running kitkat the other lollipop. It's very fast uses little battery and best if all unique and highly customizable. You have to play with it to learn all the features. It doesn't have a dedicated dock, that's something you'll get used to. I usually change launchers several times a year but so far I'm not even tempted to look for another launcher. Very happy with total launcher.
Yes unfortunately only up and down - does not support scrolling side to side
I stumbled upon this launcher last week. Used it all weekend and really like it. Extremely light and fast and unbelievably customizable.
Released by ChYK, the author of sslauncher. It's still in beta, so there are some bugs. I think you will like it.