We did
Hi Dean,
A multiple RV builder friend of mine told me that he had bad luck with the cheapo plastic lines leaking but other guys have used them successfully for years.
For peace of mind, we used braided rubber hoses which we custom made (it's fairly easy) from both sets of brakes to the piece of angle aluminum on the pilot's side. From there we used aluminum tubing down to the wheels with the loop at the axle that Van recommends. We did use the plastic stuff from the reservoir to the passenger side and haven't had a leak.
Good luck,