I have a Agri-Fab brush mower with a 12.5hp Briggs engine, pull start. Its a lot like the swisher.
I pull it behind my Suzuki Vinson. No problem whatsoever.
I use it along a narrow path we have between the farm land and trees. The path winds through the tress and is about 3 miles long and 6 feet in width. Due to the tree branches getting the tractor in there would be a pain.
I've had it 3 years and have about 250 hours in use.
I can't say enough good things about how its performed. It has needed some small stuff like broken bolts and a new belt. However, the design is pretty simple and repairs are not difficult (otherwise I couldn't make the fix).
I highly recommend getting one to use whenever the tractor can't fit or the job is simple enough.
MoKelly