I'm trying out 10.4 on my own laptop ( dual boot at the mo ) and I use the Linux OS 95% of the time so it's only a matter of time before I go Linux full time on that one.
I've also just built a standalone desktop out of cheap parts, with NVidia GPU... I'm learning fast!!...lol, to really have a in depth play with it.
It's a unabashed experiment, play and break rig so if it all goes terribly wrong my "Gaming Baby" will survive!!!
The "trouble and strife" has Vista on her laptop and I'm tring to find something "Woman Proof" (my apologises to all that may take offence but, if you knew her you would understand.... ) to replace it. Hence my interest in this Zenwalk that you mentioned.