Racers like Alberto Tomba and Jure Kosir use the inside clear in most of the combinations in the course. Based on the above criteria, their line of descent wouldn't be tight enough, and thus the cross-block wouldn't be efficient in such cases. The inside clear can also be used successfully when going through some terrain changes as well as during straight finish sections of a course. Any good slalom racer these days should master both the cross-block and inside clear techniques and be absolutely fluent in using them interchangeably. As coaches, of course, we should be able to offer qualified help in this area.
Numerous drills exist for developing skill in switching between gate-clearing techniques.
I'll share just two of the simplest ones. For this drill, about 24 to 30 gates are set in a basic corridor down the fall line. The racer is then given the task of clearing the first three gates with an outside arm, the next three with an inside arm, and so on. The drill course here consists of a succession of rhythm changes to be made after every three gates. Once the racer is comfortable doing this, you can change the task.