I guess this paper from facebook should provide enough motivation to implement LC layers.

  
      
      Facebook Research
  
  
    

DeepFace: Closing the Gap to Human-Level Performance in Face Verification -... 50

In modern face recognition, the conventional pipeline consists of four stages: detect => align => represent => classify. We revisit both the alignment step and the representation step by employing exp...


  
  
    
    
  
  


It seems deepface (ensembles) is still the best one
https://cmusatyalab.github.io/openface/models-and-accuracies/ 70