Do you really press every possible key down almost to the switch point, and then when you want to actuate the key, press it a tiny bit further?
I would guess (and maybe I'm wrong about this) that you rest your fingers on the keycaps, and press them in as far as needed to actuate, but no further. The key still needs to travel.
I'm using Romer Gs now (G910 at home for a while, and recently the G413 at work), making the switch from MX Browns as I found them too heavy (programming RSI).
Not sure how much I press them down (will try to analyse at next opportunity), but whenever I play a FPS (which is admittedly nowhere as often as I'd like these days) I certainly "preload" the fingers on the WASD keys in such a manner that the press is far quicker than when I touch type.
Precision and responsiveness is far better than using a chiclet type keyboard such as the MS Sculpt, which compares a bit to the Apple Macbook keyboards from memory (although the new Macbook Pro has even shorter travel again). The Sculpt (or MBP) has much shorter overall travel compared to the Romers, but the feel of when you are off/on really doesn't compare; the keys feel dead in comparison for gaming. YMMV.
I would guess (and maybe I'm wrong about this) that you rest your fingers on the keycaps, and press them in as far as needed to actuate, but no further. The key still needs to travel.