#1. I really don't know as I normally tumble clean all my brass. I guess as long as you don't have enough crud on the cases to prevent chambering you should be OK.
#2. I don't load 9MM but as far as I know it uses a taper crimp and doesn't require a crimping groove. I load for 45ACP, 10MM Auto & 357 Sig and none of those use a crimping groove. I also load 357 Mag & it uses a roll crimp so the bullet does have the groove.
Hope this helps,
Rick