I am using vive wands. My controller binds for the menu are set to "mirror" so left and right hand should be the same.
When I type with two controllers on a pop-up keyboard, it takes one press to swap from right to left controller and type a key. It takes two presses to get it to swap back to my right controller. The first press switches back to my right controller, and the second press inputs the key. This means every time I type with two controllers back-and-forth my right hand always misses the first letter.
I've attached a short video demonstrating.