After three years with a Pro 2 (non-silenced), I just got the Hybrid (non-silenced), and soon I'll be receiving the Hybrid Type-S. Like you, I've decided to try the quieter (hopefully) Type-S for the office, even though I also don't like the scratchy feel and sound. My favorite aspects of non-silenced HHKB are the smooth Topre downstrokes, and the marble-rattling clack on the upstrokes. With the Type-S, I'm afraid I'd lose both, but at least it should be quieter for my office-mates.
Regarding your question about the Hybrid compared to the Pro 2, it's too early for me to tell. My old Pro 2 sounds like the Pro 2 in the video you posted, but both are broken in, and the upstroke clangs are distinct. My Hybrid is only a day old, but my impression is that the sound is very different from my Pro 2. The downstroke thud is more hollow-sounding, not as deep or solid-sounding as the Pro 2, and the upstroke clang is more like chiclets, rather than large, glass marbles sounds on the Pro 2. Also, the action is very light, with almost no tactile actuation feel, and it feels and sounds scratchy. I must say, I'm really not a fan. However, I do remember that when I first got the Pro 2, it also was a little scratchy at first. I'm hoping that with more use, the Hybrid will be like that.
You might also consider lubing your Pro 2. In the video below, the same guy in your original video is typing on a lubed Pro 2. To me, it sounds quieter and more pleasant than the Type-S. As others mentioned, you do lose much of the upstroke clang, and the overall feel and sound is very different than on an un-lubed, it's still equally pleasant.
