I'm T1 LADA and have used Victoza and Byetta quite successfully for all the reasons Brian mentions. In my case it even seemed to revive some of my waning beta cell activity. Here's an interesting link about ongoing trials and benefits for T1's: http://diatribe.org/issues/67/trial-watch
Also, I wrote extensively about my experience with this class of drug here: https://forum.tudiabetes.org/topics/byetta-miracle-drug-for-perfect-bg-control-for-recently-diagnosed
You're endo should not be denying you access to Victoza or other drugs in this class. If after sharing some of the recent research he still doesn't come around, find another one.
Good luck!
Christopher