Currently there is no way to easily prevent inventories from being attached to a Storage Lectern block, which isn't very compatible with other mods.

For example:

• Supplementaries safes (without key access)
• Supplementaries presents
• Mailboxes from mods such as Mighty Mail (MrCrayfish's Furniture) and Snail Mail
• Other individual player accessible but private inventories

These are blocks in which disabling access via a Storage Lectern would be sensible. Giving the world hosts and players the ability to blacklist certain blocks would be a great benefit.