TK9K1

I presently have a nice bootable USB toolkit, including tools such as Hiren's BootCD, MiniXP, and a bunch of other portable apps, which is nice for utility when doing repairs on various computer systems.

What I'm wanting to do now, is add a bunch more functionality in the form of:
Bootable Linux distribution(s) (such as backtrack, etc)
Portable applications with an emphasis on productivity and managing personal data
Full encryption for access, across the board.

Basically, I'm wondering if there's a way to build a multi-boot system on my flash drive, with multiple partitions, all loaded using the truecrypt boot loader, excepting one unencrypted partition for a portable truecrypt to access the data on the drive when plugged into a running system.

What I'm not really sure on, is how the boot loader works, or if there's a known way to integrate it with the HBCD and Linux loaders.

I'm envisioning something like this:
{TrueCrypt_Loader[HBCD|MiniXP|BackTrack][TrueCrypt_Portable][Apps&Data(encrypted)]}

Any idea how this might work, or if it's even doable?
If not, what's the closest thing I can hope for?