In reply to An Triubhas: a lot of this has been said before:
Bristly Ridge is a little bit harder than North Ridge. But in my opinion ( which contradicts some of the earlier posters ) the most difficult and scary section is at the start of the route, rather than at great pinnacle gap.
You get onto the ridge via one of two gullies (sinister on the left or main gully on the right iirc), and despite the name I think sinister is the easier one ( maybe named after latin for left? ).
I found this the hardest part of bristly ridge, so if your partner can manage the gully, the rest should pose no problem. Hope this helps.
Descending Y Gribin is a formality, really nothing to worry about there.
Enjoy