How should I serve the coffee cake (See details)

I’m having a book group at my house on Monday night. Will be serving finger snacks like hummus and pita, guacamole, cheese and crackers. I made a sour cream coffee cake to serve after. My question is whether to serve it on its own or with ice cream or whipped cream and berries. The cake has a streusel layer in it and streusel (cinnamon, sugar and walnuts) on top. Does it need accompaniments or would that be gilding the lily?