I've had 1 girl not allow DATY due to my facial hair. I've also had about 5-6 girls at the same shop compliment it and play with it thoroughly while encouraging DATY.

I keep my beard nice and trimmed so that along with only drinking black coffee probably helps. I can't imagine some patchy neckbeard with milk residue from this morning's coffee in his moustache would be pleasant for the girls.