Hey guys,
Thanks for your replies.
I actually have installed the Hurd (its Debian distribution, to be precise) on a VM Box for now. And I actually dropped by the #hurd last night, but it was awfully quiet. But it seems that most of you guys seem to be in Europe, so it's expected as it was probably very early in the morning for you. ;)
I was actually following the documentation papers on a more sequential fashion and had not gotten to the development part yet. But, after a quick glance, I like that the Hacking-guide does provide some useful short overview. :)