Mountain front derailleur for braze-on mount? I'm converting a Giant 2006 carbon road bike to flat bars. It has this setup:

Ultegra 6600 Triple, braze-on mount, bottom-pull, 52/39/30

105 5600 10-speed, 12-27

I have a set of SLX M670 10-speed shifters I'd like to use. The cable pull is (apparently) wrong on both ends, so I'm looking for replacement derailleurs. 

What front derailleur can I use with these shifters that'll work with a braze-on mount? It's not clear to me which, if any, Dyna-sys derailleurs fit this frame. Or if any of them can handle the 52T ring.

The fallback is to give up and buy a set Shimano R770(?)/R780 or Microshift TS83-10. Microshift and R780 seem most likely to be compatible, but there's not a lot of documentation on the former.
Have you considered cable pull adapter that would allow you use both MTB shifter and present road front derailleur?

Jtek Shiftmate 7 seems to do what you need. 

I have not used any such adapters myself yet but I thought you should need about such possibility.