LM5175: ISNS+ and ISNS- to GND or pull-up to Vout?

Team,

my customer found three different recommendations regarding the ISNS+ and ISNS- pins.
Can you clarify the correct usage or, if all three solutions make sense, what the advantages of each configuration is?

1. The online simulation (I guess webench) shows both connected to GND:
   1. 
2. The reference board shows them connected to Vout:
   
   1. 
3. According to the datasheet, they should be shorted if not used.
   
   1. 

Thanks!