This might sound strange coming from me, but give the guys a break.
The Amithlon/AmigaXL problems and the other licensing problems are issues in their own right and should not prevent anyone from buying Freespace or any other software title they happen to publish. After all, by doing so you'd be punishing the software authors at the same time as the publishers. What is more, we don't know for sure who or what is responsible for the Amithlon delay, so I personally wouldn't like to see any boycotts started on that pretext.
If anyone likes the idea of Freespace, don't let the identity of the publishers put you off.
Finally, yes, this 'ere Amithlon fanatic can confirm Freespace runs OK on Amithlon, with the software rendered graphics performing at a very acceptable speed indeed. The only frawback is that AFAIK the software renderer is limited to 8-bit colour only, so the quality of the display is nowhere near as good as that on my Windows version with hardware support.