Cantrips gained via the book of shadows

[irondude]

IIRC, the book of shadows gives you three extra cantrips, from any list. My questions are:

a) Can you gen them from many lists? (for instance, one bard and two cleric)

b) Can the warlock cast such cantrips as WARLOCK spells? (for instance, if you get shocking grasp from the wizard list, can you use charisma for your attack as if it was a warlock spell)?

Thanx in advance :)

[Shadow]

Yes and Yes.

To clarify the second part: Whenever you gain acces to a cantrip from a different class, such as from a feat, it tells you specifically which casting stat is used. In this case it doesn't tell you, so you use your own (Cha).