so watching his captain's hands do signing all day means Spock has to go lie down from being 50 shades of flustered often. 😏 I also like imagining the lil personality differences in their signing too.. Since Uhura is a talented comms officer her signing would be super clear and fast if need be.

And Kirk would be slower, a bit more clumsy but confident and pleasant Spock's signing would look a bit mechanical/personality less on the surface; focused on the clear movements of delivery.. But to ppl who know him, his gestures would still have that lil bit of sassy warmth to it.