SLRD ke hone ya nahi hone se koi farq nahi padta. Both sides EOG wali trains bhi chalti hai HOG pr (like all Rajdhanis and most Shatabdis). You can easily check the HOG operation by looking at the cables. A thin HOG UIC cable at top and two thick power feeders at bottom needs to be connected between Loco and EOG/SLR.