Usually it gets delayed by an hour or so, barring few exceptions.. It has RSA with MFP GR, so I think cleanliness is a bit down as I have read in some blog of Mfp GR.
Less patronage is due to the fact that it runs till Ssm, if its extended to Gaya or Dhn, then certainly it will gain popularity.. Also many people from Ald-Cnb don't prefer it due to odd timings..