I would absolutely be interested in this Salvia!! Not to replace "Amistad" but in addition to it. Especially if this is a variety of S Guaranitica that behaves like the species- gets good sized and spreads by tubers. I have read about "Purple Majesty" and "Jean's Purple" (I think that is the correct name and sometimes it gets confusing figuring out if some of these are the same plant under different names or indeed variations or hybrids with similar characteristics. I bought one from a local place this year- no botanical name on the tag but called "Brazilian Purple". It is not perennial here but it has gotten 3-4 feet tall and just as wide! Flowers almost exactly like Amistad but maybe very slightly more red in the Purple than Amistad. It has no tubers, just thinner roots. It is pretty but I think I would like to try the one in this thread instead. I sure will be watching for it to be listed for sale. The pics are of my "Brazilian Purple".
@FBTS can you explain the differences between this one you will be offering from Brazilian Purple or Purple Majesty (which I do not know much about).