Experience with HP's new "PageWide" printers?

I have to buy a new business-grade printer for an office that will be used by non-tech people, many of whom will want to do the breezy 21st-century thing of printing to a foreign wireless printer with a few taps of a stylus.

The new HP PageWide printers seem ideal, if a little expensive - which is offset by very low page costs, supposedly minimal maintenance and very easy printing hookup.

Anyone have hands-on with these, either a 452 printer or 477 all-in-one especially?