I have the launcher running on my evo with cm7 rc4. I like it; honestly its a little different, I had ADWEX prior. Its pretty smooth; no really big issue with battery life. The 3d effects on it are pretty cool; although it did take me an entire night to customize the panels (I have 9 i think). There are some downsides (Flickr is just a posting of the top pics on flickr for the day, weather app was kinda off for my house so i switched it to a near by city, doesn't rotate for landscape mode).
I know it's pricy but I realize I'd spend $15 for beer at a bar on a given night; why not spend the money on an app that I'll use on a daily basis.