Apologies for getting all wonkey technical but I'm building up a SRAM Rival equipped crossbike and don't want the SRAM 34/50 or 38/46 optional cranksets. Is anyone out there using the FSA Gossamer 36/46? Looks like Redline and Jamis spec their bikes with these. My LBS says the Gossamer is not for 10spd. SRAM chains. Is this phooey?