I think the majority of folks find it easier to learn a two-handed backhand than one hand. I tried it myself. Unfortunately, I am so left-handed that is was hard letting my right hand be the dominant hand like it should be. So, I went back to primarily a one-handed backhand but even now when I play someone who has a hard flat first serve, I will use two hands to return it.
LeeD is right, it is primarily a left handed forehand. I have had people choke up and hit left-handed forehands for a few minutes and then put the other hand on and they were hitting pretty good backhands almost immediately.