Yes Bhai ,sometimes in my area I have seen Circar express getting P7 but Coromandel. And HWH mail getting P4.on same day .(All non Lhb trains )
P4 is very proven and reliable loco Of IR
For yr Information of other person Circar hardly touches 50km average where as 02544&02822 are s fast .loco link is given as per demand & availibilty at respective station