I keep reading that future Di2 will have 'remote' shifting. I think most people looking for that were thinking of time trials. I have a different use for it, and what I'm wondering is this: Does remote mean INSTEAD OF the brake shifters, or IN ADDITION TO the brake shifters. Are two different buttons sending the same signal (not at the same time obviously) a problem, or doable?

It's not often, but if I'm on a hilly ride, there will sometimes be a stretch where my hands are on the flats, I'm back on the rear of the saddle and digging deep, and I'll want to shift down (if I have any gears left ) It completely breaks my rhythm to lean up and shift on my STI shifters. Just wondering if a future remote would give me a SECOND shifting option, that i could place somewhere more convienent for those situations, or just replace the brake shifter option, which really wouldn't help me at all. Basically just dreaming about the future since it's a slow day at work. Thoughts?