Regular shuttle transfer doesn't let the other ship enjoy your flagship skills at the same time.
Oh, so thats the catch of the skill. Still, I feel sceptic about the skill, and this doubling of your combat skills. I was hoping that the skill would actually
not transfer your skills, and would have kept the skills of the officer of the ship you have transferred yourself to. So this way you could have invested in other trees than combat, while also having the opportunity to contribute to battle on a piloted ship that wouldnt suck because you have no combat skills. And something like that feels like something that can compete with the redacted skill as alternatives for the end of tech tree. This way you still can pilot the radiant, but youd have to spend 10 sp for that. Or you can have a strong tech/leadership combo, taking command of the fleet as a general aboard kite in the back, transferring yourself back and forth from time to time to make adjustments to your ship positioning/venting/etc.