alex 90
Yes I agree with what you say about how the system works in practice. I was trying to suggest a reason for the anomaly over Cherbourgs seemingly differing requirements as shown in the AIP and the website so as to assist carlmeek with his listing.
The AIP lists full time customs availability at LFRC in daytime working hours, with PN only required for the evening. This is a new AIP page dated 2Mar17. There are no NOTAMS modifying it. I find it hard to believe the new page could be wrong. The website is clearly not accurate - hopefully the two language versions will be synchronised soon. Agreed that meanwhile anyone contemplating going through there should contact the airport for clarification.