for me i do clean my gear up after use!
get a blower to blow the dust off 1st before you clean otherwise its like sandpapering it.
i dont share lens cloth with the body just in case..
i use a normal wet cloth and clean the body and the lens before keeping em.
so i gave it a wipe down last week, using cotton buds to reach crooks and cannys on the zoom grip etc. the camera itself pretty clean leh~
but all the rubber area jialat hahahahha. the cloth turn black! the zoom grip esp!
i seldom clean the front element of lens. only clean with lens pen when there's visible grime on it. I dont clean the insides of my cam as i seldom change lens. if i take out and clean, might intro more dirt than i never clean.
It really depend on the shooting place and envionment. Place near the sea, river I will definately give it a good wipe to remove the salt. For front element and sensor, as long it is not dirty i will not touch it. I change lens quite often, even though i have a walk about lens but i still prefer pro lens for color, speed and sharpness.
Btw use different cloth for glass and body (exterior).