I have various unicycles from 24 inch to 36, a fixed gear road bike and a 2 x 10 gravel bike. At the moment, the fixed is my first choice for most rides including a short commute.
I have used it on SS with freewheel but it never grabbed me in the way that fixed has. Part of my ride to work is along a canal bank, slowing down to pass under narrow bridges, or to get past walkers and joggers. Part of it is across rough ground. I make it part of the game not to use the brakes except in an emergency, which means planning ahead, feeling the back pressure on the pedals, timing the pedal strokes and weaving to end up with the power stroke in the right place for an obstacle. It's like a dance.
I spend all day sitting at a desk arguing with idiots, some of whom are customers, and my 15 minute ride back to the car before the long drive home is therapeutic. I'm 57, but I feel like a kid again.
Conversely, there is no doubt that my 2 x 10 is a far more capable machine in terms of uphill, downhill, cross country and long distance, but it is less intuitive and less joyful.