There have been 1 or 2 past PpRuNe threads commenting that after a reduced ATM takeoff, selecting CLB may result in a throttle push. Yes, and TOC at rated CLB may well be harder on the engine than the takeoff rating. After a while you get used to it and drive on.
On the plus side: From an engineer's perspective, think of the takeoff as a warm-up setting before going to a higher setting.