In the past large bags and suitcase were allowed inside dutch goverment shelter. Goverment shelter have in the past proven to be rather emty, because everybody goes to relatives and friends. Whats your remains yours. The dutch law does not allow items to be confiscated unless they are illegal or writen down and announced inside the shelter. Also they don't search your stuff to find illegal items. They will only enforce the law if it's publicly visible or posses a threath.

In holland we rather use the "soft" approach to deal with things, instead of starting off a negative impuls given by searches and confiscations.