Definitely a good option. I did this once in may 2014 but combo was BCT ADI shatabdi + SJ raj. I was booked in 1st AC and I got to share my cabin of 4 with an IAS officer who was returning from election duty as election observer. He told about the whole election process and also shared his experience as observer. That was the best journey by far i had apart from kota janshatabdi journeys ( that will remain on top). Regarding RFing this route is as much good as route via Kota, especially for diesel lovers, as you said. Divyanshu bhai ek kaam karo toss karlo, jahan sikka le jaaye wahan chale jaana. ЁЯШБЁЯШБ..