Was fortunate enough to 'work' JetStars and Sabreliners - in their mil VC-140 and T-39 guises - into/out of RAF Northolt on many occasions in the mid-70s. As 32 Sqn operated 2 x HS-125-600s, the noise issue wasn't considered an embarrassment in comparison!
Wrt Dassault Falcons, yes the wing was the same as the Mystere's and was a primary reason that Cobham (now Draken) adopted the type for it's ECM training role as the hard points and necessary wiring runs were able to be used and enabled various pods to be fitted underwing 'relatively' easily.