I can't imagine anyone not making sure their engine speed is appropriate to the gear they intend to be in - if that is "rev matching" then so be it. If not done, people haul it into gear against a reluctant synchro, drop the clutch and the result is a jerk perceptible by all the occupants, or on the less common occasions when the engine speed is too fast, the car will surge briefly. Either way feels like a rubbish shift.
Buy a Merc C63 and it will even blip the throttle for you - AND it sounds good too. No fishy aftertaste either.
CP_e Standback & PNP; CP_e 3" SS Downpipe; Corksport FMIC with Top-mount K&N filter & OEM Ram CAI; Turbosmart BOV; Dashhawk; Prosport Boost Guage; JBR solid shift bushes; DBA 4000 Wiper-Slot front rotors; Hawk Ferro-Carbon HPS Street front brake pads (@ 69,000km); Sumitomo HTRZIII's in 225/45 x 18