Zero times in 11,000 miles, except for a flat tire just after I left the dealer after a tire change (don't get me started on that).
Still, I've had a few over the (many) years, on other bikes of course, but these days I'm not half-way 'round the world. It's all relative to what your adventure is. Any bike can break down eventually (generally at an inopportune time) for one reason or another - best to be prepared for whatever your situation is. (OK, I admit, I was a Boy Scout).
Still, I doubt that high pipes making access to the minimal tool kit in the right side more difficult is going to be a game changer.