What issues you had?
Here in Italy non standard lights are already a no go for our MOT equivalent.
Fortunately I got a very friendly place where I get my cars MOT'd.
About the coppers pullin' you, the old owner of the Leon placed fake healight washer covers and with proper headlights [fresnel lens and everything] I'm pretty confident they'd fall for it.
Auto levelling sensor seizing up, motors failing, switch issue, condensation. And when there is an issue with the lights, you get a yellow bulb flashing right ni the middle of your dash all the time - very annoying.
The cornering lights while great in principle are **** in practice as they really dont help in the corners in my opinion and only really generate more income when they start going wrong in year 3 and older.
My last car was in for headlight warranty work more than anything else.