If Bi-Wiring is an option, should I choose Bi-wiring over single banana with free jumpers

One technical issue I forgot to mention.  Bi-wiring effectively reduces wire gage a few units.   The reason is that an effectively larger diameter has less inductance since  it has a larger cross-sectional area, allowing current to flow more easily and creating a weaker magnetic field around it.  When bi-wiring with a cable designed with very low inductance, reducing inductance further by bi-wiring may contribute to amplifier stability issue, potentially leading to oscillation and ringing.  I actually made this mistake.   Goetz Alphacore was well regarded in the Absolute Sound in the late 90s.  I bi-wired my Apogees with their M1 cable, a low inductance design.  It caused my Krell KSA300s to oscillate, triggering the protection circuit on turn on.   Goetz graciously let me return their product with no restocking fee that time.   Just assure you do not use a very low inductance cable, or ask your amp mfg. for input if you bi-wire   

Bi wire looks cool

I have not seen the Martin Logan jumpers, but I do have jumpers on my KEF Reference 1 speakers and on a pair of Mordaunt Short floor-standers.  These are flat metal, possibly plated copper, but far bigger in cross section than any speaker cable!  In effect they are two big spade connectors in tandem - no other connection, plating, wire, crimping or solder.  To my mind, it does not matter how many 9s there are in a replacement 'jumper cable', it cannot possibly have lower resistance than the original jumpers.

Can't comment on bi-wiring ....

Bi-wiring makes no difference, The back EMF isolation theory is complete nonsense because the crossover already keeps those currents away from the MF and HF drivers. The larger gauge wire claim makes no sense either, because the second pair of wires isn't connected to the woofer except maybe by a common ground if in the unlikely case the crossover was wired that way.

Bi-Amping is a different story. Properly done with a low-level crossover before the amps and bypassing the woofer passive crossover elements, eliminating the series resistance (and consequent loss of woofer damping) and hysteresis (delay between input and output) inherent in a series inductor will make a very noticeable improvement, as well as increasing the systems dynamic range by as much as 6dB.

This is basic electro-physics 101.

I have always bi-wired my ProAc Response 2's.  They just sound better that way--deeper sound stage, more texture.