Yes, actually, Some one is playing a Sage in my game.
I pity you, as it's IMO an incredibly powerful profession.
Does this mean they are permanent?
I do play them as such, being constantly in effect and lasting permanently until an effect dispels them.
So When does the spell end or how long does it last?
The way I play it, the Sage only needs to successfully cast the spell once; then it's constantly in effect and lasting permanently until an effect dispels it, in effect granting the Sage a permanent +20 in Reasoning and Memory.
Is there a newer version of these spells in RMSS that better define them?