"Would it be a poor decision combining the G68 with a different amp?"

In my opinion, No! I use a G98/68 combination with Bryston amps and Wilson Benesch speakers. I'm very pleased with the output - but that's my opinion. Go listen, compare and make your mind up is my advice.

Cliff

Main system - Sources (Kodi-HTPC, Vero 4k, FireTV, Sat) into Trinnov Altitude 32 (8-16) (+Roon), Trinnov Amplitude 8 amp & Vivid Audio (Giya G3, V1.5) and REL Stentor III speakers. Others: F80 + Raspberry Pi and other Pi systems.