Mumbai Local 2 by 2 . What has been your experience? Good, Bad?

I heard Mumbai local train 2nd class 2nd compartment towards Churchgate is a crusing spot. I usually travel in 1st class so never experienced anything.

What has been your experience ? Did you enjoy? Was it risky? Would you like to share anything?

How are things on weekends and weekdays? Is it same throughout the day or only during peak office hours since the crowd is more?