Anybody heard BPT's SC-7.5LN speaker cables?

Balanced Power Technology, makers of highly regarded balanced power conditioners and litz wire power cords, also makes a speaker cable they call;
"SC-7.5LN (naked) ultra fast, litz speaker cable"
This is an all copper, litz wire cable with very little dielectric. BPT currently has an ad on Audiogon for these cables. Have any of you heard them and, if so, can you describe the sound and maybe compare differences or similarities with other better known cables such as Cardas, AZ, AQ or others?