See, I don't hold this card. When I had a Select account, I was interested, and I asked my RM. He told me it's possible but chargeable. Since I am content with the Debit Cards I am holding, I didn't apply for it. This was last year in June. 2-3 months back, I upgraded to Exclusive. So, if it's possible to get it for a Select account, I don't see any reason for them not to issue it for an Exclusive account. In Indus, this is possible; you can hold as many Debit cards as you want, provided you pay for them.
You can try one more thing: if your RM refuses, you can try opening a lower variant joint account and get the card issued against it.