Mike, welcome. You'll certainly enjoy the great sound that your M60s will give you, as long as you give them good source material to work with.
As to bi-wiring(sometimes sarcastically termed "buy-wiring"), no, it isn't significantly different electrically from regular wiring, including when one of those "special cables" is used. All speaker wiring has to divide at the latest when it's inside the speaker enclosure and entering the high and low frequency sections of the crossover. With bi-wiring, the point of division is simply instead moved back to the point where it leaves the amplifier terminals, but nothing else has happened which would be of any audible significance.
There're plenty of fast-buck artists in this business who've learned how handsomely profitable it can be to never underestimate the gullibility of some audiofiles, and offer magic players, amplifiers and even wires. An excellent explanation of speaker wiring by a veteran audio professional is found
here . The usual electrical wiring in an appropriate gauge(as suggested by the table in the article)transfers the electrical energy that runs along its outside to your Axioms(or any other speakers)just as well as the stuff which sells for up to a thousand times as much.
