Important note on +2 Staves for GURPS Magic

Important addendum on my post about swapping the penalty-reduction of staves to a bonus.

GURPS Magic: Staves as bonuses instead of penalty negators

As I noted in the comments, "This is +2 to effective skill, not to the skill level of the spell. You'd need still need a base skill level of 15 to get a -1 to energy costs, or a 20 for a -2 and half casting time, and so on."

I figured this would come up from one of my players, but it's worth noting outright. This is an effective skill bonus for using a tool, not a flat bonus to magical base skill. Only base skill matters for Magic Rituals, GURPS Magic, p. 8-9.