sam or drg

>.> being fairly close to caping out merits i wanted to lvl sam for a bit, and was thinking subbing drg. =P i wanted to know if it was a reliable combo or not. :3

The above is something ive been thinking of long term. Is this a good combo? I have yet to see a Sam/Drg so i was just wondering. Also can any Drg's out there give me a little advice on the Drg quest? The "defeat the dragon" part worries me lol Thank you all and good hunting.