Custom locator with viewport 2.0 support?

[hamletina]

Is it possible to write custom locator plugin with support for draw override in viewport 2.0 mode?
The C++ version of "footPrintNode" example was updated in 2012/2013 Maya API documentation and it demonstrates corresponding changes required to be made in plugin's code (registering MPxDrawOverride, etc.).
But any atempts to archieve this using Python API actually failed for me (and, as far as I know, for some people over there as well).
If it can be done using Python it would be great to have some kind of a working template to start with (maybe properly udpdated "footPrintNode.py"?).
Please, if anyone has had an experience with solving that kind of task, guide me with advice to pull this off.