Its not so much a regional opinion in my eyes, but its a noticable one. UIs built for touch from the get go are better than ones where the touch layer is grafted on. Yes, I totally understand and even agree that with what Nokia is doing in making the Touch UI as it is. That doesn't mean that its the best way. Unless the applications themselves are designed for touch input first, then button input, it will seem disconnected still.
In my opinion, the UI of Nokia phones is ok until the featureset of the device grows. It does not scale very well, and I'm pretty sure that Nokia knows this and is trying to address this in small steps. Low end phones are fine, they don't do much; but a device like the N82 becomes a hassle when in order to make it functional, you need to add several buttons and other UIs in order to exploit them. Simiplicity is something you build from teh ground up, not layer on.
In my personal opinion, S60 needs to be simplified for TS input if this is to be a major feature; and UIQ needs to be redesigned in terms of User flow in order to be a profitable implementation. Both have pluses in their approaches, but to add new paradigms, layers are only best if you want to maintain teh status quo.