As far as conforming to the instructor and your PD...that's up to you. I feel strongly enough about that topic that I encourage you to get your police department policy/mentality changed. The PD here was the same way until they detained the wrong guy, who knew his rights. Charges dropped, lawsuit filed, entire PD got retraining and re-educating on the WA firearm laws. We have not had in incident in years. If you don't want to be that guy, that is fine, but someone needs to change your PD mentality before it embarrasses them (Canton, OH), or gets an innocent killed.
I am a firm believer in wearing appropriate protection when riding a motorcycle...even when its 110 degrees. Ballistic nylon is getting very protective, but so far I do not believe anything will outrun good leather gear on asphalt. Good leather protection is restrictive in my experience, couple that with restrictive leather gloves (remember if you wear light gloves, and do go down in a self defense instance, will your hands be in shape to handle a firearm?), triple that with a helmet (full face for me...brain buckets for whoever else wont' be as restrictive
), I am all ready at a disadvantaged in speed and vision. Quadruple that with concealing my firearm in those restrictive leathers, I might as well have not carried. This is my personal experience, others may have a great jacket they can get their glove in and a good purchase on their firearm. Just some things to think about.