My favorite use case is still 2 W/s using dub.THAT and different loop lengths (or different divisions of the tempo going into sample.THIS), and using an LFO + Cold Mac to crossfade the sound source back and forth between each.
Another related variation I like (also known as “who needs rainmaker”) is to patch the sound source to CM OFFSET, patch W/ #1’s out to LEFT IN, and then LEFT OUT to W/ #2’s input. Similarly, W/ #2’s output goes to RIGHT IN while RIGHT OUT goes to W/ #1’s in. Mult LEFT and RIGHT outputs to your output mixer. You can also pass the LEFT and right outputs through attenuators before they reach the other w/ for better cross feedback control. When FADE is at -5v cross feedback is active and when FADE is at +5v the W/s feedback to themselves. I usually keep dub.THAT at +5v as things get a little crazy as more generations stay in each w/ but it’s something that could be played with more… also somewhere else I wrote about the trick for locking dub.THAT to a level and then accessing a different LIVE cv mode on that - would be fun to do that and get into transport.THAT but I haven’t tried it yet…
A similar setup with just one W/ lets you achieve an open feedback loop…