Re: Vest, Lanyard or Chest Pack?
As someone with a vest, lanyard, chest pack and backpack I think it's fair to say there's a time and place for each of them. In the winter I like the chest pack/backpack because it makes swapping layers easy as pie. I alsolike to carry an extra dry sweater in case I take a slip and a coffee pot for a stream side brew.
In the summer nothing beats wet wading and the filson strap vest for me. Just the right size for everything to be comfortable and some room in the back for a water bottle.