You mention it’s in Test Flight.

What are the odds it either (a) Rolls out Damus-wide after a beta round or (b) Becomes only an option for a sub-set of users?

As much as I do like the ability to like and/or zap depending on the post, I hope the final rollout is standard regardless of the user (ie, likes and/or zaps for all OR #zapsonly for all).