I'm a mac user at home and the only machine I keep music on is a mac but I used the iPod software on the work PC to make my iPod a FAT 32 iPod. It's simply a case of plugging you iPod into a PC with iTunes installed and in about 1 min you have a FAT 32 iPod (empty)
This can then be used on both the Mac and PC as the mac can read fat 32 no problem.
So I have a PC iPod that is used almost exclusivly on mac's except for those emergencies that crop up where you need to transport huge files from pc -> pc or pc -> mac. Then I'm thankful I have a FAT 32 iPod.
There is nothing scary in the slightest about making your iPod FAT 32 except for the fact you will be wiping it clean, until you plug it back into your main music library