Although your tool looks more like Virtualenvwrapper.
It's good to have other options of course (and yours looks nice), but it's also good to at least make a case for improvement over what's already out there.
His attitude is very Pythonic. That's another thing I didn't like. Other languages let you write whatever you want (maybe to a fault, but still) and support you. This guy's all like "Python has venv and everything else is superfluous so why did you write this". Sigh.
https://github.com/jzombie/pipper