I use honey all the time. Adds a flavor.
The best one was when I got a golden honey dutchmaster blunt and sealed it with actual golden honey.
yes it burns slower.
too much honey will burn your lungs out though. dont use too much.
really shouldn't be so bad at all as long as you just don't use a lot of honey.

what i do is lick my lips with honey and seal my blunt that way.
i used too much honey once and it burned like hell and led to serious cotton mouth.