The level one synthesist wants to take the following two evolutions:
Shadow Blend (Su)*
In any condition of illumination other than bright light, the eidolon disappears into the shadows, giving it concealment (20% miss chance). If it has the shadow form evolution, it instead gains total concealment (50% miss chance). The eidolon can suspend or resume this ability as a free action. Source: Advanced Race Guide
Shadow Form (Su)*
The eidolon's body becomes shadowy and more indistinct. This shadow form grants the eidolon constant concealment (20% miss chance), and its melee attacks affect incorporeal creatures as if it had the ghost touch weapon property. The eidolon's melee attacks deal only half damage to corporeal creatures. Source: Advanced Race Guide
So I looked up lighting conditions and determined that next adventure he would be mostly in "normal" light. The Core book describes this as:
"Normal light functions just like bright light, but characters with light sensitivity and light blindness do not take penalties. Areas of normal light include underneath a forest canopy during the day, within 20 feet of a torch, and inside the area of a light spell."
So since normal light is described as just like bright light, with two exceptions, does this mean that under normal light the shadow blending in ineffective?