Rationale: Other mods, such as Artifacts by ochotonida, use the belt slot and it's hard to justify a spyglass taking up an inventory slot in long exploration sessions, where a spyglass would be most useful.

An optional dedicated slot would solve this.

Map Atlases by Pepperoni-Jabroni uses a similar idea, though I don't think it's optional.

Hopefully this will bridge the gap between the immersion of Spyglass Improvements and the convenience of Zoomify.