I love the Jones Loop, especially on my wife's Fat Bike (Salsa Beargrease) where I use them with the Jones foam handlebar grips. Those grips are long and allow the hands to more positions up and down.
We also have Jones bars on my wife's touring bike where she likes them a lot.
The only disadvantage on a touring bike that I could think of is the inability to naturally install the Ortlieb Ultimate Handlebar bag. I've seen one video of someone jerryrigging a solution but I did not find it particularly elegant.