Carbonazza, one of the guys at the polish light bike forum uses such combination without any issues (and he is racing often), his build log below:
Bar Ends: Duke Bar Ends 45,2 g
Bottle Cage: Cannondale Carbon-Ti Cage 30,5 g
Bottom Bracket: Rotor BB30 Pressfit 41mm 68,6 g
Brake (Front): Formula R1 with Formula Kool Stop Pads, BK Carbon Clamp 167,9 g
Brake Disc (Front): Hope Floating Rotor Race Edition X2 160mm 83,2 g
Brake (Rear): Formula R1 with Formula Kool Stop Pads, BK Carbon Clamp 190,1 g
Brake Disc (Rear): Hope Floating Rotor Race Edition X2 160mm 79,6 g
Brake Bolts: 4xM6x16 +2xM6x30 Ti, 6x M6 Alu Driled Washer + Carbon-Alu Adapter Black 160mm 26,9 g
Brake Disc Bolts: 6xTi M5-T25x8 7,6 g
Cables: Niro Turbo Plus cables with Sealed Jagwire Red Cablestops + Carbon 6x5x350mm tube 28,7 g
Cassette: Sram XX1 10-42 265 g
Chain: KMC X11SL with missing link 230,1 g
Crankset: 390,6 g
-Crank Arms: THM Carbones Clavicula DP 175mm Matte + Fiber Lyte Carbon Plate + FCT Alu Red Bolt + Rubber Arm Protection 349,2 g
-Chainrigns: Absolute Black 34T 104mm XX1 Style with FCT Red Bolts 41,4 g
Derl (Rear): SRAM XX1 with Alu Red Bolts 240,6 g
Fork: Cannondale Lefty Speed Carbon 110 DLR SL OPI, Custom Shelf, Carbon Lockout + MCFK steertube 1193,6 g
Fork ekspander: Extralite UltraStar 2 6,9 g
Frame: Scott Scale 29 RC "L" 2013 with headset cups & protective foil 979,7 g
Misc: Scott Chain Protector + Chain Catcher + 10mm Soul Kozak Spacer 15,3 g
Grips: Bontrager Race X Light 18,3 g
Handlebar: Schmolke Carbon SL 6° 31,8x600mm matte paint with Bontrager Bar Plugs 113,8 g
Headset: Self-designed Tapered Headset - Double O-ring Sealed 62,2 g
Pedals: Crank Brothers Egg Beater 2Ti tuned 149,3 g
Seat: Smud-Carbon.eu UD matte with custom stickers 76,3 g
Seatpost: Smud-Carbon.eu 34,9x400mm UD, POP Yokes Ti black bolts, custom stickers 136,4 g
Seatpost clamp: Smud-Carbon.eu 38mm 15mm high 6,7 g
Shifters: SRAM XX1 Trigger Shifter 104,8 g
Skewers: FRM Task E-Thru 10mm 44,7 g
Stem: Kalloy Uno -7* 120mm 124,5 g
Tire (Front): Continental X-King 2,4 Race Sport 29" 619,4 g
Tire (Rear): Continental X-King 2,4 Protection 29" 744,5 g
Tire stuff: NoTubes Sealant & Air 206,7 g
Top Cap: Soul Kozak Top Cap SE 4,2 g
Wheelset: 240s Lefty&XX1 ThruBolt + FRM XMD333 + DT-Proloc Red + CN Spoke 424 Aero + NoTubes Tape and AMC Valves + Spokes Carbon Tied 1429,4 g
Overall: 7891,3 g