Because the L2 doesn't have the same power limiting functionality, its not normal to fly the L2 in 4-axis in the cruise or climb, but no reason not to for an approach. However much of the time the L2 will be being flown in 3 axis and perhaps that makes the fleet culture a bit different.
The 92 has the same problem but one pilot I spoke to said they fly their approaches 4-axis. Is this common across all 3 companies (agreed, it will be tomorrow...)?