Alternative FS OS Installs (btrfs, zfs)

[Michael Butash]

Anyone using "alternative" file system methods like btrfs or zfs to boot 
with?  Nothing seems too native, but can be made to work it seems, just 
wondering if this is one of those "should do" vs. "can do".

The notion of something that can do raid, encryption, volume management, 
and snapshot features is attractive, but I've always layered mdraid, 
luks encryption, lvm, then ext atop that.  This has been pretty solid 
when the ssd's don't die 3-6 months later, even with aligning partition 
to block boundaries and such, trim, etc.  I'd love to have one single 
encrypted partitions I can use volumes within for the os mounts, btrfs 
and zfs in theory do most of this now.

How well is really the question...

Commentary appreciated!

-mb