Chassix that are ATX & BTX compatible

I've been hearing lately about new computer cases that are compatible with both the ATX and BTX form factor. (Such as the Thermaltake "Tai-Chi" case.) Yes, the BTX motherboards aren't exactly available yet, but I'm considering this type of case so I can re-use it in a few years on systems that will likely be BTX.

So here are my questions:

1. Have you seen any online reviews of these ATX/BTX cases? Are they any good? How do they rate?
   
2. Will the BTX form factor take over eventually, (so that such an ATX/BTX case would be a smart buy now)? (I suspect the heat problem will be with us for a long time to come, and therefore perhaps also the BTX case, which is optimized to eliminate heat.)
   
3. Even if the BTX form factor takes over eventually, perhaps there will be so many other changes in cases (such as new standards for water cooling, hard-drives, or USB ports???) that will make a current ATX/BTX case obsolete before it could ever be used for a BTX motherboard? In other words, is a BTX-compatibility for the future merely an empty promise that will not be realistically fulfilled?

Coolermaster stacker. Although IMO BTX is something fo a storm in a tea cup mainly aimed at OEMs. AMD have no plans, and IIRC cant support using current processor designs. (Something to do with trace lengths for the memory controller)

The Thermaltake Kandalf supports both and is supposed to be pretty good:

Kandalf Case

Overclocker Cafe Review

So three cases claim to be ATX & BTX compatible:
1) Thermaltake "Tai-Chi" case
2) Thermaltake "Kandalf" case
3) Coolermaster "Stacker" case

(Thanks to herulach and Elessar_VPR)

Also the Cooler Master Stacker II which is coming out soon.

Watch out though, the CM stacker 810 is only ATX compatible.

i've heard btx doesn't make anything cooler, and that in the right conditions (or wrong in this case) it can actually run hotter than atx

The Coolermaster stacker is not true BTX

No, thats right, its an ATX case designed to be modifiable to BTX complience.