DAD link SWV on cisco 9500 chassis over 1Gig?

Hi,

anybody here that configured the Stackwise virtual for catalyst 9500 series ? (9500-16x to be more specific).

I saw the documentation that says that for SWV links you need to use at least 10gig ports.

But i was wondering what is the minimum requirement for DAD link ?

The reason i'm asking is that we only have 4 10gig sfps for SWV links, and other SFPs (to downlink switches) are only 1Gig (because customer strictly didnt want to pay for 10gig SFPs)

So my question is, is it possible to configure DAD link between SWV members using 1Gig ports, or will i need to have at least 10Gig ?

Thanks!