Drui, I have not bought these but if and when I do I would go to my local Honda dealership and wander around the used car section. When I did this recently there were loads of examples of cars with the horrible fat genuine parts and a couple of thin ones similar to the Polish ones.
I would probably then take a tape measure (NOT a metal one!!) and with the dealer's permission I would measure the gaps on some actual cars. My intuition is that they should slope gently upwards but this little exercise will soon tell you.