I had the TRPs on a gravel bike and when I could get them adjusted properly they were great. But most of the time they were out of adjustment and I ended up getting full hydraulics which were worlds better.
On our current tandem I started with a road hydraulic caliper - for about 2 rides. On a steep downhill they were not up to the task. Replaced them with Shimano ZEE 4 piston downhill calipers and the difference is obvious.