The answer is yes, but only if the connectivity is really fast. See, right now that connectivity from JBP to Delhi is only provided by MPSK and to a lesser extent Gondwana.
Please note the following facts:
1. The RAC issue I mentioned is for 2 AC
2....
more... Try boarding the Indigo flight between JBP and DEL for once. Prices quickly go upto 5k+ in that flight and even then it is jam-packed.
3. VB Sleeper if it leaves at ~8.30 pm and arrives NZM / NDLS by 8 am will be a super hit. In fact I am planning to travel using that option once it gets introduced.