Skill Trainer question

Okay, I have all three campaigns, and the EotN. Here's my question:

If I have a Nightfall character, and I want him to learn a Prophecies campaign skill, can I learn it through my guild's trainer? Or MUST I do it in the Prophecies campaign?

Thanks,

Shane

(I'm at work, or I would have just tried it instead of asking here)

I'm going from memory here so I could be wrong, but the only skills you can buy from the GH Skill Trainer are core ones. However if you have some Balthazar faction you can unlock skills at the GH Priest and then use a skill tome to unlock it for PvE.

Yup, core skills only from the GH.

Try using him with, for example, a D/P. Skills available - [signet of capture][res sig]

The GH skill trainer is probably one of the biggest waste of money in GW since he doesn't offer much in terms of skills other than core skills and cap sigs. Unlock the skill, do the quest that takes you to LA and buy it from sergio or as mentioned before use a tome.