I think that's what they mostly settled into, thee heavier work, after the usual spell of 'oo, what can we use our new toys on' - the Glasgow-based locos also wandered up the WHL on freights for a time in the late 60s
Without rushing about in this heat to double check, I'm fairly sure most if not all of these early ScR machines were of Vulcan Foundry build (not RSH as per Bachmann's D6826). Parade, rain, rearrange