I use a split keyboard for my work laptop when I'm at work. To tell the truth, it corrects my typing by forcing my fingers to the correct hands. I hate it! For years I've typed using whatever fingers could reach the desired keys and did not think about which hand I should use. Now it shows me down and I have to relearn my high school trying teacher's typewriter lessons.
In short, no physical pain, but not a fan. It's too slow.
Control-f for find is a classic. I do like using slash (/) for finding as well. If you're recognizing the keys yourself, do away with control and just have at it with f or slash for find, t and b for top and bottom and left and right arrow keys for next and previous pages, if such are applicable.
In short, no physical pain, but not a fan. It's too slow.