I currently have fairly heavy (57 oz) Montrail Blue Ridge GTX hiking boots. I've read how lots of people prefer trail runners instead of boots for their lower weight and comparable ankle support. I'm very interested in moving to trail runners.
That said, is there a pack weight those who use trail runners would instead wear boots?
My concern is that I carry ~10 lbs of photography gear (tripod, camera body, 2-3 lenses, filters, batteries, etc.), so even if I do reduce my standard backpacking gear significantly, boots would still be a better option unless I can get under X lbs total. What is X? Assume fairly rocky terrain in the Sierras.