>> Kidding aside, I've seen jackets with large interior pockets, but those are more for urban wear. Maybe someone will recommend something, but if not, I think it should be pretty simple to sew two toggles or a flap of material inside your existing fleece jacket to hold up the water bladder...
First, to clarify, I'm just looking for something that will hold bottles (Nalgene, etc.), in low chest pockets, as is fairly common in heavier cold weather gear, not my water bladder. I had thought of adding some to an existing jacket, but my sewing skills are... well, I have no sewing skills. I could probably find someone who does alterations to do it, though. Thanks for the suggestion!