if you must have cutting right now, jon at encanto might be able to help or number of this forum members who are selling their cuttings on ebay.
if you can wait a little, buy a plant online and participate in the forum for awhile. there will be number of request and offers coming up towards the fall of every year and jon will list cuttings for 2013 from his nursery early next year.
also, if you want, you can order cuttings from UC Davis during the fall of this year.
black madeira is tough one from what i heard. expensive and hard to grow. but taste from what i have heard, if you can grow it till it fruits, is all worth the effort.
panache might be easier to get.
pete