Thanks, Doris.
Man, you have to see it to believe it. What an impressive performance. This is ISI training? Why, then, don't we see this kind of amazing versatility more often?
I would think two reasons.
1) Because ISI is not part of the path to the Olympics and the prestigious national and international events on that track, few ambitious talented skaters stick with the ISI program past the lower levels, and few of the less ambitious skaters who do stick with ISI reach the upper levels.
2) Of those who do reach the upper levels, Freestyle 7 (approximately equivalent to USFS intermediate test) requires a single loop, flip, or lutz in the opposite direction, and Freestyle 9 (approximately equivalent to junior) requires either an axel in the opposite direction
or a double axel; Freestyle 10 (approximately senior) requires double jumps in both directions
or a triple toe jump-double loop combination.
http://www.skateisi.com/site/sub.cfm?content=testing_requirements#7
So it's possible to get through the ISI tests without ever doing an opposite-direction jump harder than single loop. It's also possible to get through Freestyle 9 without doing a double axel or triple jump. But for Freestyle 9 and 10 you need at least one or the other.
I think a skater of average ability will not be able to do those skills, especially with only a moderate amount of training time. So not very many skaters can pass ISI Freestyle 9 and especially Freestyle 10 -- only those who have talent and also the money to train many hours a week and who choose to stick with ISI even when they are at a skill level at which they could do well in ISU-style competition.
The number of those who also compete in ISU-track competition will put more emphasis on training triple jumps than opposite-direction doubles. Skaters who have the talent to do both are few and far between.
And since there's no explicit reward for opposite-direction jumps in ISU rules, skaters who are aiming to succeed there don't spend their time developing that skill. With the IJS as it currently stands, not only is there no reward but in effect there's a penalty because the GOEs are likely to be lower and the double jumps take up slots that could be more profitably used for triples.
However, if the ISU wanted to encourage that skill they could build rewards into the scale of values. I would like to see that happen.