No need to be overly impressed - my Grandpa was German, is all, and I used to live in Germany for almost three years. Besides, Schwäbisch is German... well, sort of. *g*
I don't speak the dialect, either, but I'm able to recognize its pecularities (like using "le" as the diminutive instead of "chen" or "lein", and after a week or so I can even understand most of what they are saying.