Another nice way to run the launcher is using the store button.
Just use this tweak
(or any other path)
Personally I use this to run Komic, but I tried with the launcher and it works.
Someone could also join the two things together and use the tap/swipe gesture to run launcher/something else.
(Amazon "obfuscated" the searchbar.js file, but what's needed it easily findable).
PS So it's time to make a nice 67x67px icon for the launcher...