Let's say you have found a very lost enemy and you are sneaking up behind them and the haven't noticed, if you have your gun out could you switch to your knife without them hearing the sound effect and switch back as well?

In lower elos(iron-plat) it is an unrealistic expectation to expect decent comms or that everyone will or should comm. In fact, more often than not, there are bad callouts rather than good ones which sometimes causes a tilt cycle of blame....