Yes, some digitized records can't be viewed from home. I searched the catalog on the FamilySearch site by location (I searched for Munster bei Dieburg, Hessen) and two types of records came up - one being "Church records." Clicking on that pulled up "Katolische Kirchebuch," and when I scrolled down, there were several kinds of records listed, all with the symbol for digitized microfilm, but with a little key above it (accessible only at an FHC or affiliated library). But that's OK - I actually enjoy going there, and the volunteers are always very kind and helpful.