I wonder how Australia's veteran sprinter would handle the heat in Spain given he's had a tough time scratching for stage victories this year - not that he could, given the changed circumstances at Silence-Lotto whose riders have kept Cadel Evans in cotton wool for the most part.
Tom Boonen and Daniele Bennati have dominated the two sprint finishes contested in the race so far, but apart from Mark Cavendish (whose Team Columbia is not competing at the Vuelta), the pair are certainly the fastest going round on two unpowered wheels at the moment.
Not that I'm being critical of Robbie - but has age finally caught up with him?
My heart says no while my brain says maybe.
There comes a time when a sprinter's reign at the top must end - it's happened to the best of them - Djamolidine Abdoujaparov, Mario Cippolini, Tom Steels, and more recently Erik Zabel.
Credit to Zabel, who at 38 is still competing at the top level without really setting the world on fire in the fast sprints.
Will Robbie become a Zabel clone and never win another race in a Grand Tour, despite filling the minor placings on more than one occasion?
McEwen has confirmed his future by signing with new Russian team Katusha for the two years ending 2010.
This is the old Tinkoff, a team with big ambitions as Robbie will race alongside the likes of Filippo Pozzato and Gert Steegmans.
Now, these are two men who could assist in resurrecting Robbie's winning status in the peloton.
At last, Robbie can rely on two men who are capable of forming a train when the whips are cracking.
I can picture the trio now going for gold in next year's Tour de France.
Come to think of it with such power, strength and talent around him, Robbie now has the weaponry which is certain to propel the little Aussie back on to the winner's podium with little fuss.
Maybe age doesn't play a role - after all he's ONLY 36.
He'll farewell Silence-Lotto with fond memories, but looks ahead to a Russian roster bent on revolutionising the Pro cycling scene.