Xen Supoprt in FreeBSD

Hi Friends,

I would like to know, the level of Support for Xen in FreeBSD i386-32bit and AMD-64.

# Can FreeBSD be used as both HOST or GUEST ?
# Does i386 32bit FreeBSD and AMD-64bit FreeBSD provide same level of Xen Support ?
# Does FreeBSD Enjoy the Same level of support that Debian have with Xen ?

Eager to know from Experts, who have practical experience with Xen and FreeBSD.

Thanks in Advance