In both cases they supplement foot traffic with internet sales.
I'd say the combination of both would be the best way to go. Also, seeing how's I'm an HVAC guy, let me tell you from experience, when you design your walk in humidor spend the extra money and do the humidification system correctly. I've seen too many try to do it the cheap way and have nothing but problems and lost / damaged cigar stock. There are companies that will design the humidor for you. Check a few of them out.
Be prepared to not make much after the bills the first few years.
You don't own a business, it owns YOU!
Yea, don't think you'll be working less and making more money. It's usually the other way around. At least for the first 5 years.