I'm adding Jupper cables and your opinion is ??

I am in the process of purchasing new speaker cables for my Avalon Eclipse's....I will let you know they are very expensive and would complete my entire system.....the issue is, the mfg.'s price for their bi-wired pair of cables adds on a whole bunch of more money which would kick me out of the game .....the dealer recommended using the same kind of wire for jumpers....I called the mfg. and they said that it could be done but did not want to comment on the sonics of doing that....so, does adding the correct or same kind of wire jumpers degrade the overall sound or does it have no affect on the sound if done correctly ...????