Yes actually I have, though I don’t have the time right now. If I ever had a place with a bit of land I would try it. I made beer for a long time, which is easier to do in a city environment, especially in extract form.
I once went to help another home vintner bottle his wine and found out that the hardest part for a small timer is getting decent grapes. Most growers don’t want to sell you a half a ton to make 1 barrel.
As to Dube wines, there seems to be a real niche out there for small start-ups in SD (wineries). I’ve read and seen several articles about other small operations in Escondido.