Get your Address Proof from Post Office

The Indian Postal Department is now issuing address cum identity proofs. To get the postal identity cards you have to make an application on prescribed form for Rs. 10/- and submit it with a fee of Rs. 240/- in the nearby Head Post office, as not all the post offices are providing this service. Once you have submitted the application form for Postal Address cum Identity Proof, a postman will visit your place to verify your address. Once the verification is complete, you will get the Postal Address cum Identity card. However the whole process may take upto a maximum of 2 months. The ID once issued will be valid for 3 years after which it has to be renewed for a fee of Rs. 140/-. In case you lose the Postal Address cum Residence Proof, the postal department will issue you a duplicate proof for a fee of Rs. 190/-.
Though the initiative by the Indian Postal Department is appreciable, i have noticed a few downsides -
1.) In some places like Bangalore, the postal department is demanding the Voter ID to issue the residence cum identity proof. At this moment i can not find a single reason as to why a person with Voter ID will need a Postal ID.
2.) The maximum time duration for the entire process is 2 months, which is kinda too much stretched in my opinion.
3.) Are these ids recognized by other Govt. Departments? Are these valid for opening a bank a/c, etc.
So did you apply for you Postal Residence cum Identity Proof? Did you face any problem? Share your thoughts with me.