Well, I seem to share a lot of symptoms.
I walk digitigrade whenever I get the chance, not becasue of my werewolf obsession, just because I like it. I gain some agility too which is always good.
As for howling, I'm not very vocal, not even when I'm alone. I don't really feel much of a need although it might be fun.
I love the woods. I'm in the woods whenever possible and I do feel very much at home while I'm there.
I can stare at the moon for quite a while, and full moons are pretty awesome. once again, I don't do this becasue I'm obsessed with werewolves (at least I don't think so) I'm obsessed with werewolves because it fits me so well.
Daydreams, I daydream and just plain dream about werewolves and lycanthropy in general a lot. Other types of shifting also show up, but werewolves are leading by quite a bit.
When angry or agitated I do snarl and bare my teeth, kind of an involuntary thing, l can hardly do it unless I'm angry. Like I said, I'm not very vocal so I don't growl that often. Actually I can't remember the last time I was angry or even raised my voice, so this may no longer apply.
And, yes. I won't deny that the gestalt form is attractive....