are you able to change between the 2 travelers?

No

nope

You can make a new account with the other traveler sibling and switch accounts.

No and the reason is because of the plot.

Maybe, Maybe next time. But the choosing between Traveler is pretty much coded into the Storyline from the get go.

Nope, and some people are pretty bitter about it, because they'd like to change.

Choose carefully - you're stuck with the one you pick, unless you decide to start the game over from scratch with a new account!

I hypothesize we will at the end of the reunion storyline, maybe in 2027!! 🤣🤣

No, maybe at the very end of the game they will eventually add it. But for now and a presumably long or infinite amount of time no

Nope, If you want play as the other MC,need to make a new account.