I had a soffit job that required 48 12" wide 12' long pieces of drywall. Stacked 12 sheets, marked it at 11-15/16", set the the saw to cut 1-5/8" deep, cut through 3 sheets, mark the 4th at the same time. Had 48 pieces in less than 10 minutes with perfect edges and no clean up.
The TS may not be the answer in all cases, but there are some that no other tool(s) can do the job as efficiently.
Tom