
You can boot DVD games in every region and have an option that will boot an Xbox Live game (switches off Chameleon, turns to TSOP and reboots).
I find it useful cause I bound it to the "Launch DVD" command of my UnleashX. So when I select to Launch a DVD XBGuardian pops up

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Section "Root" Item "XBOX Live",ID_Chameleon_Release_D0,ID_Full_Reboot Item "Launch in PAL","D:default.xbe",ID_Reg_ROW Item "Launch in NTSC US","D:default.xbe",ID_Reg_NA Item "Launch in NTSC J","D:default.xbe",ID_Reg_J SortAll Item "Quit",ID_Quick_Reboot Item "Shutdown",ID_Power_Off }
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It's really really simple but I personally find it useful 
Now for ChamFlash 
It's just a Chameleon skinned EvoX that only haves options for flashing the Chameleon. Useful if you don't use EvoX as a dashboard 
Hope you find my findings useful 