How to implement custom gizmos?

So, custom manipulators are quite obscure to use right now, but I have the feeling that this would be really usefull for my addons.

can someone help with examples of its usage, I am strugling a bit to understand.

Answer is the same as here:

So TLDR we won’t be able to access this–at python level anyway–until later / around the time 2.8 full is released?

Fair dues. Guess the only other way to mess with custom gizmos right now is brute forcing it with open GL graphics and whatnot while we still have that? Or editing with blender’s source code :E

Custom manips are probably the thing about Blender 2.8 that’s got me interested so I’m lookin forward to that more than anything; heres hoping that feature rolls around sometime soon!!