Yes, the key is to really go for it. When I get tentative with my swinging backhand I block the ball and pop it up and it often floats long or I frame it. But if I swing hard and through the ball it often ends up a winner or forces an error as it moves very quickly through the court. I have to push myself to stay aggressive with it, since I am usually a more defensive consistent style of player and hate making errors.
A one hander swinging volley sound pretty cool. forehand swinging volleys look really difficult to me too but many on the women's tour hit them.
It doesn't seem like any of the pro men hit swinging volleys but I think they have learned better since they probably don't have enough time to hit an effective one anyway.