I think they probably would if they didn't KNOW what is was!
Yeah that!

Make a small batch of the icing and see if your kids like it! I personally love it and I'm a big kid!! hehe

Otherwise you could mix the buttercream with the cream cheese icing! OR you could try the white chocolate and cream cheese icing that "Fast Ed" made for his carrot cake (on Better Homes). OMG It' soooooooooooooo goood!!! *droooool*