Grapevine propagation tips

I have propagated plenty of plants before but never grapevine. So just looking for any advice

My father-in-law gave us these grapevine cuttings in water a week ago and they are already sprouting leaves.

Should I leave them in the water to develop roots?

Pot them up in soil with prop powder?

Use some other method like sphagnum moss or perlite?

TIA for any tips