What I was trying to say is that people have always been nomadic learners. No matter where one goes, one is learning.
However, there may be less nomadic learning now than in the past. There is a heavy use of mobile devices, but what are people learning? I posit that people are shutting out the world about them and withdrawing into their own worlds. Mobile interaction for most (I believe) people involves Facebook, texting, twitter, e-mail, and calling friends/family. Few people are reaching beyond this. Never has so much been said my so many about so little.
How many times do we see people with their ear glued to the phone or stumbling down a city side walk while they are texting (let alone driving)?
How many parents by their children any type of electronic device to keep them occupied in the car, rather than observing the world around them?
How many people go on vacation, yet remained glued to their phone?
In light of this perspective, the term Nomadic Learner seems lose its impact and meaning.
I have no peer-reviewed resources to support my supposition. I only have what I have observed.