What do you see as the possible problem?
I recently purchased an alfine equipped bike to use as my commuter/winter bike/tourer. Downside is that it is probably not quite as reliable as a rohloff, but price and availability of shops able to deal with it in most of Europe make it a better option for my intended purposes. If I intended to cycle across south America anytime soon, then the few percentage points gain in reliability would sway me the other way.
I have a 32 fitted at the moment, will probably change to a 30 for when I actually go touring.