Different currencies for different condition types in sales line item

Dear All,

I have a requirement from my client which is as follows:

The scenario is an Export scenario where the document is prepared in the customer currency. Now there is one particular condition type in my pricing procedure for duty drawbacks which is off set by a counter condition type(both these values go to different G/Ls that off-set each other). Therefore this value would not hit the customer account.

Now the requirement is such that, all condition types should be in customer currency but this duty drawback condition type and its counter condition type should always be in INR (Company code currency).

Can anybody suggest if this is possible and if not possible is there any work around or alternative solution I can propose to my client?

Thanks & Regards,

Rohan Gudavalli.