I've been using a Freestyle 2 for a year+ now, 10" split, mouse sits in the middle.

While typing it keeps my arms on the chair's armrests with my hands just extending forward, and the current armrest height keeps my wrists an inch or so above the desk so I don't need to worry about tracking down wrist pads or such.

It depends on what I’m doing. If I’m doing a type intensive task I put it between the split and I use a track pad. Sometimes if I’m doing something mouse intensive I’ll shake it up, but that’s mostly how it stays.

I put mine further out