There is a side bracket for the R44 - which is EASA certified. But can't see the point - why go to all the expense of a gyro mount and then lose at least half the range of the mount ?
There was an HD sidemount being used on an R44 in Florida - but they've stopped because it was a complete nightmare for the pilot and the cameraman.
And RHC have gone and put the wrong camera in their HD spec newscopter. Might be OK for small US tv stations trying to comply with Fed-mandated "must be HD or we'll take your franchise away". But is of very limited use elsewhere in the world.