I followed the guide at http://wiki.amahi.org/index.php/Amahi_Plug_Edition
I modified the script slightly since I already had a drive that was partitioned and formatted. I kicked the script off and with the installation code in hand, was up and running after 40 min from first downloading the script within Arch Linux ARM install, which is less time than I thought. Truth is I snuck out for a snack so it probably took less time.
My first impressions are that they really put a lot of work into this, and while I spotted the occassional typo, the whole install went relatively smoothly. The only gripe I have is that they definitely threw the Dockstar into the mix as an afterthought. Without loading ANY apps, I've already started using ~100MB of the swap space. I'm sure a lot more optimization could be done to reduce memory footprint, but once again, Amahi is probably targeted at newbies to Linux who just want to hit the ground running and start using all these cool apps. Amahi is based off Fedora 12, so I'm not sure if it has the same "bottom up" approach as Arch/Arch Linux ARM install.
Fortunately, I also have a Sheevaplug on order, so this wasn't wasted time, although I probably won't fool around with Amahi any further until I'm on the Sheevaplug. All the disk swaps really slow things down to a crawl, and I'm not savvy enough to figure out the memory optimzation issues.