Contributions by ice cream headache (1)

I've taken this pack out a few times, and it's been very good. The photo block on the inside easily holds my 4 lenses no problem, with room for all the extra memory cards and other little knick knacks. Your gear is held in place really well, with no shifting. The attachments on the back hold a tripod really well, or a helmet or pads for the trip up. There's not a lot of room if you have the camera block in for other gear, probably just a snack and a light jacket. So if you need more room, maybe look at the Dakine Sequence. But the photo block can be removed to carry on its own, or to use the pack as a normal pack. Looks like it would make a great carry on bag.