As before, the rupee is a 'closed' currency. There are numerous signs up at Indian airport departure terminals telling you that it is illegal to take them out of the country, and it is clearly stated in India guide books too. Again if people want to knowingly break the law that is their choice. Personally I feel it is unreasonable to expect tourists to arrive in a country without any local currency at all. You may need to buy water, pay for a taxi, give tips etc to airport and hotel porters. The last thing you need after a long flight is to queue up at the airport money exchange booth, and then get ripped off with a high commission charge and a poor rate of exchange. Like many others no doubt, we used to tip with £1 coins (80IR), but when you think of the cost of everything and what you can buy for a pound, i.e. meals, beers, taxi's, haircuts etc, you realize that the annoying airport porters, who hassle you as soon as you step into the arrivals hall, must be the highest paid workers in India, pouncing on tourists arriving daily from all over the world!
I would rather give reasonable tips to everyone, eg 20 rupees a time for services than(80IR) to an airport worker for carrying one bag, even when you say 'no thanks', approx 5 mtres to the taxi outside the doors. They have the cheek to argue if you only give them a Euro or a 50 pence coin.
Some skilled tradesmen only earn two/three hundred IR a day.