I had a gyro on Pitch and Yaw on the Rookie II with thrust vector. After a hundred and fifty flights or so, I removed them. I have put another 150 flights since then, and I like it better without.

When you get up and start doing some tumbles, the gyro system (for whatever reason) exaggerates movements so that when you are trying to get out of the tumble, it's sometimes nearly impossible because you end up fighting the gyro system.

After 30 flights doing radical tumbles there was one so close to the tree line, I just quite doing the sequence at all. Then one day of clarity and a lot of beer, decided to take the gyros out of the equation. Now it comes out of the tumbles no problem.

Mileage may vary, but that's my experience with more than 300 flights on thrust vector.