I don't think a team can survive in sub-continent conditions without a spinner, the quality of your spinner decides what kind of role he needs to plays , since most of the damage is expected to be done by the Aussie seamers, the spinner could try to hold one end up, and the fact that by the second innings the wickets slow down too, making it tremendously difficult for the seamers to be effective no matter how well they bowl, makes it clear that a spinner has a role to play in India, and to expect a Katich or a Clarke to fill that role against an Indian team who thrive on playing spin is asking for trouble.
P.S: BTW, why do we Aussie fans keep making so much fuss about the lack of having a good spinner, except for India and Sri Lanka none of the teams have a good spinner, the spinners in Aussie domestic competiton don't have the greatest of records, but what' the harm in trying to groom a spinner who has decent potetial and who might come good in the longer run, we Aussie fans have become a bit spoilt overs the years having the luxury of having Warne weave his magic over all the teams and in his absence watching MacGill do the same.