Airlines really not allowing 2 cabin baggages???

Just carry it in, make sure its not too large and in case it is then they will simply as you to check it in at the gate so no long queues or anything. Works everytime for me

They say they don't allow but I travelled domestic 2 days back and observed few ppl carrying two cabin bags. If one of your cabin trolley is already 15kg then you need to think of extra charges.

Never heard that, unless one of your bag is too large in dimension.