Single-wire biwire versus single-wire plus jumper

My speakers have separate tweeter and mid-bass connectors, like so many do. I assume that shotgunning separate single-wire runs from amp to upper and lower is best (although this may be controversial). But I don't want to pay for double runs of this expensive cable and anyway it would look a bit messy.

I had been planning to run single wire to the mid-bass drivers and then jumper to treble.

This speaker manufacture offers the option of having a Single-wire run terminate in bi-wire at the speaker side. This eliminates the need for a jumper, but it means that the gauge of wire that arrives at the mid-woofer will be smaller than a pure single wire run with jumper.

What do you think? No audible difference? Huge difference? Ever tried both and compared?
Thanks,
Art