Actually the Indian rupee sign needs to be distinguished from the Sri Lankan rupee, the Pakistani rupee, the Nepali rupee.. etc., all of whom use "Rs" (U+20A8) as a prefix[1] The usecase is pretty validated there.
Plus there is a logic to the Indian rupee sign and is not just an alphabet with two slashes - its the letter R written in Hindi and in English simultaneously . Pretty cool IMHO (and a shout out to IIT Bombay [2] !!!)
And why do you think the rupee sign, if successful in India, would not be adopted by the rest as well? "$" is by no means limited to the Mexican peso it was originally intended for.
And yes, I do agree that the rupee sign is a little masterpiece of typography, but that's somewhat beside my point -- the inconvenience of switching to anything is the same.
Plus there is a logic to the Indian rupee sign and is not just an alphabet with two slashes - its the letter R written in Hindi and in English simultaneously . Pretty cool IMHO (and a shout out to IIT Bombay [2] !!!)
[1] http://en.wikipedia.org/wiki/Indian_rupee_sign [2] http://www.idc.iitb.ac.in/events/Indian_Rupee_Symbol.pdf