neurontin+alcohol is a recreational combo, in that it makes one extra chatty and feel-good-y, but not in an amphetamine-like way. Heightened disinhibition is what I'm saying. If you take it regularly, or by itself, you're not likely to achieve any rec. effects.
I've read anectdotal accounts, and have experienced this myself, that there are withdrawals with Neurontin. Additionally, I would think there'd be some sort of seizure threshold issues upon discontinuation.
I wouldn't say WDs would be anywhere near Benzo WDs though