Parrot CK3100 B/T Kit + SounGate GMCell+05 NAV

[sclui56]

Am trying to put together parts to have B/T handsfree in my 05 H2, contacted Parrot and they suggested to use the Soundgate GMCell interface cable

http://www.logjamelectronics.com/soundgmcell.html



I did a search and noticed a lot of members had issues with Soungate products in general (though not specifically the GMCell). Am wondering if anyone has gone this route so that the handsfree is muting the headunit broadcast and at the same time using the front speaker(s) for phone use?