yes but there could still be a 1-second delay, some form of smoothing, missing price points or sthg at times... my trading partner did complain about sthg like that when he demoed the system 2 or so months ago... thing is live is live, and demo is demo, no matter how close you want demo to be to live... fwiw, i've been using HSFXi (live) for more than 6 months now, my partner for more than a month now, excellent value proposition for size trading...
best thing if your still demoing is to ask for access to their live prices (view only), then you'll get a good feel for the real thing!