I configured /etc/systemd/systemd.conf to use systemd modules for mount, swap, etc. I also recompiled kernel with full cgroup support. Booted kernel with parm 'init=/bin/systemd. Only three or four legacy init scripts were actually being parsed and executed. That only took about 1.5 seconds. I don't consider that significant.
'systemctl dump' showed all but two or three systemd modules active.
interesting, in my quad core Phenom II X4 965 i did "eye" notice faster boot times + i love the tools + i think many ubuntu ish crap can be removed from the boot process too wich should give a bit more perf + im playing in changing kdm boot priority too so maybe i can force it to start as early as possible wich will give the sensation of even faster boot times XD