Working GSPs or conformation?
The working GSPs I've known are/were bananas. Super awesome and impressive to watch in performance, but holy crap I could not live with that energy level on a daily basis.
You know how some people feel like BCs and working Mals are crazy impossible-to-live-with maniacs? That is how I feel about working GSPs. I am sure they're not all like that, but all the ones I've met have been.
I like to think that I have a pretty high tolerance for high-energy working dogs, but I'd never be able to cope with one of those guys.
Having said that, though, if both the dam and sire of this litter belong to your friend, you should be able to go meet them and decide based on the individual dogs rather than breed stereotypes that might not apply to that pair.
ARCHMX TDCH Pongu the Insane, CD-C, RE, RL1X6, RL2X5, RL3X2 (GSD mix, b. Apr 2010)
Crookytail the Tigerwuff, RL1, ITD (Akita mix, b. Jan 2011)