That's pretty cool. One of the goals for the orangebox was being robust and compact enough to throw in a suitcase and fly to a conference. The nucs win on compactness, and also via intel's vpro/amt can do remote power management (ie. ipmi light).
There's something quite magical about using Juju and MAAS on the Orange Boxes and seeing the LEDs light up as you scale out a service (e.g. juju add-unit -n 5 nova-compute).