[Anchoret]

BTW, after some research, it turns out that I was right all along about this:

These extended bare cores on toploaders are incidental, not intentional. The strings (such as SIT Powercores) come in only one set of dimensions, intended to fit through-strung basses. If you put them on toploaders, the excess bare core lengths are hanging out in the breeze like this.

I found none available with different exposed-core lengths to suit different bridge schemes.