/boot RAID1

I've set up everything to switch my fresh Slackware 9.1 install on
/dev/hda over to RAID1 devices set up on /dev/hda (currently 'missing')
and /dev/hdc.

Before I switch, I need to check one thing which isn't clear to me from
the Software RAID HowTo:

I currently have a separate partition (/dev/hda1) for /boot. Can this
partition also be switched over to RAID1 (on /dev/md1) or must the /boot
partition always be on a non-RAID device? 

RAID1 support appears to compiled into the Slackware bare.i kernel I am
using. Autodetection on boot is working.

Thanks
Mick