Two questions on magic item activation

[Hsui]

Question #1: I am confused about using a staff. The rules state that this is a spell trigger activated item (similar to a wand). In order to activate the spells in such an item you either need to have the spell on your spell list (or future spell list if delayed acquisition class) or perform a UMD check of 20. My confusion is that some staffs contain spells which are exclusive to different class lists (e.g. Staff of Defense with Shield and Shield of Faith). Does this mean that if your character does not have access to both spell lists, they would need to make a UMD check for the spells not on their spell list?

Question #2 (edited for style): are the gloves of first aid (from the pathfinder society primer) spell trigger items or can anyone use them? They are not stated to be spell trigger so I assume any character can use them without a UMD check.

[Hsui]

Any thoughts?

[Brf]

#1 Yes, you would need UMD if the spell is not on your class's list.

#2 Generally, any character can use a Wondrous Item unless its description says otherwise.

[Hsui]

Thanks.

I am glad that Paizo is giving some love to multi-class characters with some of the staves (e.g. Defence, Radiance, etc) by making them usable by only multi-class characters (or a character investing enough to get a high UMD score since many of the cross-class spells are not buff spells but combat spells)

Thought as much about the gloves but got to worrying that they were just variants of spell-trigger items requiring spell list access