Thanks for the frame suggestions. I have looked at the butterfly bars and Jones loop but felt they were overly complicated and a bit ugly.
I did think about putting the shifters on/near the tops but liked the look of the bar end.
You are quite welcome, happy to help and feel free to PM me with any questions.
They aren't any more complicated than any other bar really. Good bullhorns can look really nice but I don't know that they are what I would want for touring at least regarding shifter placement. If I was doing Di2, as I think I mentioned, it would be cool because things would be better integrated however I could see going with the VO Crazy Bars and having bar end shifters on the sweep back and then TT style levers on the horns.