all5n - I know you can't be too careful nowadays, and some police officers/departments are jerks, but I would bet the farm that this was coincidence. What do I base this judgement on? Lived in Plano for 20 yrs, don't live far from there now.
Pulled over last night on my way to work by Frisco PD - hands palinly in sight , interior light on, ccw and driver's license presented at the same time per law, answered his questions and ASKED officer if he wanted anything before getting it (not searching/digging for insurance, picking up gun bag and saying "here it is", other bonehead stuff, ect). Got a ticket (like I should have) and the officer in parting made it a point to mention that he noticed and appreciated my ccw etiquette. We told each other to be safe and were on our way.
Stop by Lone Star Guns if you're bored sometimes - good gunsmiths up there if you ever need any work done - I'm a part timer there. I'm would guess there are some firearm neophytes and all around goobers on the Plano force, but I talk personally to some real firearms enthusiasts and all around good guys that are PPD pretty regularly.
Have a good one and don't worry.
Tate