I've never had the pleasure of this superb bird so close so I'm only theorising.
Sonic boom, yes you would probably hear it. I know cruise ships plying the atlantic get quite a few doses of the double boom.
Shock wave - never heard of any incidents, seeing as though two fly everyday over the same airspace and over as many aircraft each day, I would have thought that of it did cause problems, the press would have bitten on that one and the oceanic tracks altered.
Phenomenal picture though, it must be pretty spectacular from the Concorde point of view as well, seeing subsonic traffic appearing to go backwards as they pass some 700mph + faster over them.