Hey krisco!
Seems like a whack of us all got off the same bus.

I came off of a 30 year habit mid-day with an eGo starter kit and some good juice. Haven't looked back.
For the first month it's gotta be about a good flavour and mouthful of vapour, otherwise you'll be back at the smoking for that feeling that you know and love. Worry about the upgrades after a month or so when you can feel the cash that you've saved weighing down your pocket.
I did the taste-test of a regular cigarette about three weeks in and you really get a feel for what your missus has been griping about these past years.

Not saying I'll never have the rare cigar again, but really have no use for the smokes anymore. You get the nic, the weight of the vapour in your mouth, and something to do with your hands... What else was there to your smoking habit?
As far as the drinking & smoking goes, there's no change. I don't use the ecig in the bar unless it's near empty (I know the staff and they don't object), but if it's busy I'll grab a quick puff in the gents or, if it's not p!ssing rain, I'll step out with my friends when they grab a smoke. You just don't have that 5-minute commitment when you go out anymore.
My missus was tickled when I switched, so I can puff inside at home and I like to try and figure out which flavour combinations work best with my wine or whiskey. Also, I've noticed my hangovers are a bit less painful as I haven't been strangling my brain all night with a pack 'n a half of ciggies.
Be patient with yourself and the nay-saying wife, and by Easter you'll still be vaping and she'll be buying you juice or accessories as a present.
All the best, man!