Dragging a spell from the core rules to the shortcut only opens its description, though. So it's only of limited use.
I suspect that most of the time spells actions are dragged from the character sheet to a shortcut key, which then does not automatically update when the character sheet is changed (either manually or just dragging a spell to a different level). The character sheet in turn does not update when a spell action is changed in the SR Spells module. So this is something to look out for.
Especially with CL/spell level based actions I wished that the shortcuts would update to reflect the character sheet.