If it's just the challenge of the thing,go for it!
But personally,I find multiple OSes on a computer are almost more trouble than they're worth;old computers can be gotten so cheaply it's no big deal to have dedicated machines.
Plus the latest linux wants a x86 family dual core !
x86 at 500mhz running Knoppix,slax,ubuntu, Mandriva,Fedora,or SuSE are so much more useful!
Best use the Amiga as an Amiga :-)
