Vandersteen 2Ci - Bi-wire cable question

This might sound like a stupid question but I'm going to ask anyway. I see lots of bi-wire speaker cables with one pair wire connection to the amp on one side and two pairs (bi-wire) on the other/speaker end. I always questioned the wisdom and wondered how these cables are made. So here's my question: Are there any benefits in "converting" my regular speaker cables into bi-wire by simply splicing two short pairs of  cables, of course same quality as the main cable with connectors on the speaker ends.The speaker in question is Vandersteen 2Ci which doesn't have jumpers. I'm also wondering how folks hook up regular speaker wires to these speakers.

Or, I should also ask if a bi-wire connection mandatory on these speakers? Thanks.