No experience using honeysuckle blooms in mead, but plenty experience drinking it. More than 10 years ago when I was living in Northern VA, there existed a place way out in Sperryville called "The Smokehouse Winery". It was run by a guy named John Hallberg who made an excellent honeysuckle metheglin. I'd drive all the way from Fairfax and back with several bottles of his perfectly aged mead, happy as a little kid with a new toy. Drinking one whole bottle by myself was very easy and his semi-sweet mead never left me with a hangover. Unfortunately, his meadery is no longer in business but I have some very good memories of John's wine.
I'm assuming John used the flowers for aroma, added to the secondary much as a beer would be dry-hopped. Honeysuckle flowers have a very sweet nectar inside, but with a honey overtone, you may never realize that specific taste because of the ratio of flowers to honey.