Here are some links to YouTube videos (with timestamps) that show reverse delay sounds.  

Video (timestamp link)
Particle 2
Do Noise
Red Panda Particle 2 Granular Delay / Pitch Shifter (02:33)
Delay + Reverse (Random reverse with freeze).
Particle 2
Mike Hermans
Red Panda Particle 2 (01:08)
Reverse delay without any dry signal sounds like a recording studio tape reverse effect.
Raster 2
The Pedal Zone
Red Panda Raster 2 Delay Demo - A Sound Designer's Dream! (STEREO - Use Headphones) (06:09)
Hypnotic reverse delay tones.
Raster 2
Mark Johnston
Red Panda Labs Raster 2 | Secret Weapons Demo & Review (16:07)
Wide reverse delay, wide pitch shifting and amplitude modulation.
TensorAndy Martin (
Red Panda Tensor Tape Delay | Reverb Tone Report Demo (03:12)Using an expression pedal to go from forward/stop/reverse. Adjusting the Blend control for forward and reverse together.
Mike Hermans
Red Panda Tensor (00:11)
Live reverse and tape stop effects.