The code cylinders used by Imperial Officers typically resemble R. A. Stephen 0-5 rad direct-reading dosimeters with a spring brass clip and anodized blue top. The code cylinders used by rebel pilots are the rod style with multiple turned features at the top and a thin cylindrical stem.
Every military I am familiar with has pilots considered officers. Yes, some may be warrant officers, but TIE pilots should still be considered officers serving the Empire nonetheless. All of the Imperial Officers I am familiar with have used the same Imperial-issue code cylinders. Numerous rebel pilots are seen using their own rebel style of code cylinders.
Is there any evidence of TIE pilots using the rebel pilot style code cylinder? Is there any evidence that TIE pilots are not officers and should therefore not use Imperial Officer-style code cylinders?
Edit:
Admiral Motti was seen with two rebel-style and one different direct-reading dosimeter-style code cylinder in:
http://starwarsblog.starwars.com/wp-content/uploads/2017/01/motti.jpg
I am just wondering if there is a canon reason why all pilots would be prohibited from using a standard military device common to almost all of the officers in the Imperial Navy.