I use the Camelback Rogue and no it doesn't cut into my shoulders at all. I think the only thing I don't like about the Camelbacks is locking the front straps together - right over the boobs I just leave it undone and I was surprised that it stays on fine.

I don't have the endurance to ride for more than 2 hrs so if it isn't 100 degrees out and I'm not drinking every 10 seconds, the Rogue is perfect. I can fit my pump, keys, micro-tool set, and Power Bars in it. And when its full, it provides great waterbed like padding for the unexpected falls

Cheers,
Kristina