As for the Ping, you're doing it wrong; desert Pings do better on the dry side, especially when it comes to cuttings/pullings. When the mother plant fills to the edges of the pot, you can hide leaf pullings underneath it, unburied, and just wait for roots/a plantlet at the base of the old leaf. Otherwise, a technique that still amazes me years after I heard of it is to take a paper towel or two, wad it up, make a little cup out of it and put your pullings inside. Mist the paper towel, not the leaves, once every week or so if you see them start to wilt. (Your house is hotter than many, maybe more for you.) Just remember - in the desert these guys only see soaking conditions when there are seasonal storms, or sometimes very rarely. If it's wet chances are they have seeds that will sprout. The leaves are optimized to withstand drying, not wet rot.
Mass - you have to understand where guru types like Tony are coming from. He's heard from dozens, hundreds, maybe thousands of idiots griping because they did a setup like yours, thinking it necessary or beneficial, and instead killed their plants with kindness. In your case - an unusual household climate for most - you may be onto something, and this is probably the easy path while you're learning. But you represent a small demographic next to the volume of people who jump in without doing research and pester folks like Tony into jaded indignance with their trivial mistakes. (I know you've looked through eBay buyer responses before... sometimes it's painful.) If you don't give those guys a break you'll never get a good chance at learning from them; experts have usually put enough into the grind that they've earned some right to be cranky.
Tony - I think you're maybe guilty of a little myopia too. Mass is just getting into the hobby, and is working against some unusual odds. I see room for improvement too but an important part of learning is hands-on. You can't be too surprised at Mass' reaction to your largely rhetorical question. From his perspective, it's not hard for me to imagine where that could be taken as ritucule or a challenge. He's just hacked something together to start - how's he supposed to know why people use terrariums unnecessarily? If I didn't know you better I'd almost think that was a troll.
While we're still not too far from the musical references - why can't we be friends? ;P
~Joe