We have a weird trend from senior guys (Not sure if it's a LCAL or LUAL mentality...)
I had a 4 day with an LCA, but not on OE, just a regular trip that didn't get bought off for training. SE taxi out of IAH, hot day, We start 2 first, go out on that, I setup the bleeds to go off the APU, Engine 1 and 2 off, bleeds auto and ISOL auto. CA looks at me crazy, "Here we leave the bleeds on for SE Taxi." He wanted Eng 1 bleed on, L pack auto, ISOL closed, R pack auto, Eng 2 bleed auto, APU bleed on. Ok boss.
SOP is to shut down 2 once the gate is made (No left turns into the gate on Eng 1, etc. FO normally shuts off the L pack, then kills Eng. 2.