Using a CSP in a Delta secondary bank isn't good. If a CSP is the lighting pot, and the secondary breaker trips, it will act like an open neutral. Seen it happen once.
Worked on a property once where they seemed to use CSP's routinely in small open/delta banks. I thought it dumb. However they did have sense enough to mount an arm below the primary arm and put horizonally mounted pins to tie the stinger jumpers onto. That way if you forgot to trip off the breaker, or it didn't work, you could lift off the hotclamp and release the dangling jumper without it getting into anything if it were backfeeding. Other than that I thought it was a dumb setup.
Worked on another property once where a lot of open wire secondary was paralled via Johnny balls and secondary fuses. They referred to it as a grid system I think. A lot of single phase and 208 banks paralleled this way. Supposed to reduce flicker and better reliability. I think they finally quit it. Had to keep cut in when messing with their banks. Swimp would probably gotten toasted working there. It was mostly 12470/7200, so he could have gloved it from the pole.