Thanks for your interest. I also like the Apple aluminum keyboard, have two, with & without numpad, both wired, but it was phone like typing to me. The Logitech keys are way more comfortable to type on. Besides that I just wanted a wireless keyboard with numpad.
The app keys are rather nice, I kind of miss one for Spotlight but the MX Revolution mouse solves such a lack.
The glossy finish (body, not keys) is going to make it hard to keep the keyboard clean, that's for sure. Albeit the keys on Apple's aluminum keyboards got dirty so easy.
The lack of USB ports is somewhat an issue if you want to use it with e.g. an iMac though. Glad the Mac Pro comes with front USB ports.
On a funny note, I bought it cheap from a online PC-centric seller that listed it as being not Mac compatible. LOL.