Hybrid Web/Desktop app - Ruby on Rails or Django on Python?
I would do neither. Use an event subsystem such as Twisted, glib, Qt, etc. and have it act as both a GUI mainloop and a web server.
I am going to write a hybrid Web/Desktop app.
The main purpose of the app is to be something like a daemon, running on a Linux machine. But it should also provide a rich interface via web for doing configuration, reporting and management.  
I have two things in mind for doing this:  

Ruby on Rails
Django with Python

I have a fair knowledge of Python, but I know nothing of Ruby, but I have plenty of time, so I can learn Ruby if needed.
For the frameworks, I know some Django, but again no Rails.
Which one do you think I should go with, considering that I have plenty of time to learn and also, the benefits of the framework itself, for later projects.
Thanks.