I wear the original sling pack from Orvis. The green one and love it. I cast right handed, and I have the strap go over my right shoulder. It is never in the way and stays put. One thing to also remember, is that the sling packs do in fact have a Chest strap if you ever feel the need to have it tightly clung to you. I've used the chest pack walking the flats of the Keys to the back woods of New Hampshire. I absolutely love it. I have also used the the Fishpond Chestpacks as a sling or worn it "creel" style. Also very effective.

I'm a huge fan of the slingbags, I just wish mind had a water bottle holder like the new ones. The one thing I was looking at as an option is the Fishpond Waterdance Guide Lumbar Pack. I'm told you can wear it as a fanny pack, creel style, or even a sling.