Caution about doing the tour: The tour is excellent, and definitely influenced my decision to buy...BUT...they offer you an incentive that lasts only a short time (in our case it was 3 days; people here on the boards are now posting getting 7 days to make a decision and qualify for the incentive)...and no one's ever heard of Disney extending the incentive time (without some kind of "fault" on Disney's end to justify it)...so, once you take the tour, if you're not ready to buy within your incentive time frame (3 days/7 days/whatever they're currently offering), you forever lose the ability to buy in with that incentive...it's significant money...$1500 in our case...so you don't want to schedule your tour "too soon!"
So...if you think your DH might be persuaded but that it might take some time to "sink in," you might want to defer taking the tour til he's a little more interested than he currently is.
Even after the tour I was nervous about the big investment...despite easy financing, and having savings sufficient to afford it, it was (and is) a big chunk of money! At that point, my DS' promise to go with me at least annually (his idea, not mine!) along with the incentive were what tipped me over the line into buying...(a decision I've celebrated ever since!)
So, I'd echo the sentiments of those who encourage you to rent and stay at a DVC...maybe a couple of times!...then compare the cost of renting to the cost of booking that same space through Disney...the savings will be really impressive! Then, if/when your DH seems to really like it, THEN sign up for the tour...that should tell the tale about whether he'd really like to join DVC or not, and doesn't risk you being able to get the buy-in incentive...
Pixie Dust on you!