An A319 First Officer reported forgetting the Predictive Windshear Switch on his after landing check. Training paired with another First Officer during simulator training was cited as a contributory cause.

Narrative

After clearing the runway and contacting Ground Control; I performed my after landing flows. Upon arrival at the gate and accomplishing the parking checklist it was discovered that I had missed the PWS (Predictive Windshear Switch) and left it on. This was of course radiating the Ground Personnel until it was turned off; when accomplishing the parking checklist. I feel that the reason I missed this item on my after landing flow was due in part to the practice of pairing First Officer's with First Officer's during initial training. I was paired with another First Officer and because of this; I was only afforded 1/2 of the time in my proper seat. The other 1/2 of the time I spent in the Captain's seat; learning Captain flows. This only allowed me to perform my required flows during 1/2 of my simulator training. And in some cases; due to the training that was occurring on that training day; it wasn't uncommon to not perform any flows from the First Officer's seat during the training period. This is an unsafe training practice and needs to stop. It is certainly not a 'best practice' for an industry and an airline that touts safety is the number #1 priority.