Not on my current aircraft. But that's only because it doesn't have a mixture control - it's all done automatically.
I have on every other aircraft. Never really got the hang of using the EGT when leaning - it always seems to lag more than I expect - that's because as a student none of the aircraft I flew had a serviceable EGT guage, so I was only taught the method of leaning till it runs rough then pushing it forward a bit. But the only aircraft I've ever flown with EGT guages that worked all had fuel-flow meters, so I just set the fuel flow recommended by instructors for each phase of flight.
FFF
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