I lost the tags and have two of these plants which I haven't yet photographed. I love these plants but can't remember what they are called.

They have soft, fuzzy, serrated leaves which are medium green on top and purple underneath. The flowers (about 1-1.5" long)are tubular and purple, growing in clusters at the top.They are about 16" tall and 12" wide, upright growth. I remember that they prefer full sun/part shade. I have only encountered these recently so I am guessing that they are fairly new to nurseries.