I think you can see it easily, especially the 3d/4d one. My ultrasound tech said that she can easily spot a cleft lip, but a cleft palate is much harder to see...I am sure you could google ultrasound pics with cleft lips and see some pictures.
Me: 24 (25 in Jan.)
My husband: 25
Peanut: decided to go to Heaven in August
New baby: Due 08 08 09!