I’ve used a variety of split keyboards for a good number of years now, and it has made an enormous difference to the hand pain that was just starting before I switched, and also to my posture. I tried tenting too, but never really got comfy with that. I found that tenting helped me more when using higher profile split boards (i.e. with MX switches), but I preferred not tenting with low profile (Choc) switches. It’s worth getting a board with the potential to tent though, as it is a very individual thing and you never know what will work best for you.

For reference, I am not a gamer, and try to avoid using the mouse as much as possible.