Aditya, thanks for your response. What you're saying concurs with the circular that DGCA released, specifying skill checks for at least one a/c in India. However, if we look at posts on page 4 of this thread, a couple of people mention that Mr. Vashisht and Bhardwaj seem to now be saying that skill checks for all aircraft required to be endorsed on the licence need to be done in India. That's where all my confusion lies.
I think I'm going to call up the DGCA tomorrow and see what they say (if they pick up the phone!)