yes to both.
'which busybox' in the terminal reports it's in /system/xbin and verstion is 1.18.x
However, the "busybox installer" from the market fails to see busybox on my unit.
Hmm, You've gotten Titanium working on the xoom? Mine (Pro) only sees 5 installed apps, which are all just system info such as Accounts, Widgets, Bluetooth, locale, and Wifi access points. It doesn't see any of my installed apps.