I completely agree with you, Alexander.
I received the novel (in Spanish "El viajero") from a friend for Christmas and I thought it was another best-seller and nothing more.
It was quite a surprise! Well... it is a best-seller, but is surprisingly entertaining and different.
Now I'm looking forward the next novel (The dark river - to be published in summer this year) and I hope it will be available as ebook too.
The traveler in fictionwise:
http://fictionwise.com/ebooks/eBook32132.htm
L.