Hybrid Choices is not in the 10.1 Public Library, but the updated for 10.1 Hybrid Choices is in the Friends of I7 repo.
Hybrid Choices v7 for 9.3/6M62 isn’t in the 9.3/6M62 Public Library, but it’s been in the Friends of I7 repo for a couple years now.
When you think I7 extensions, think Friends of I7-brand I7 extensions! ℠
(joke, joke, there isn’t such a thing…)