I personally like this ship, they have a good dynamic and great banter! Glory's scarcastic nature and Deathbringer's cocky personality really mash well together. And I see him being her only partner. Plus in a possibly future Darstalker shows Moon we meet Firefly, Glory and Deathbringer's daughter
The big problem with this ship is the age gap. While it is not confirmed or canon, it is believed that Deathbringer would be about 25-35 years old in human years. While Glory would be about 15 in human years.
Sense the fandom doesn't have a clear way to measure the ages of are favorite dragon characters it's possibly this assumption is wrong. But either way Deathbringer is still older than Glory by at least a few years.
I rate this ship a 7/10
