Just wanted to give some feedback that as of today I have Solus working flawlessly on my Macbook Pro 2,2 (Core 2 Duo 2.33Ghz, 3GB RAM, ATI Radeon embedded GPU, 500GB SSD). This is particularly awesome because it's nearly impossible to find up to date internet connectivity software (web browsers, etc) for OS X Snow Leopard or Lion.
The one gotcha I had to overcome is that even though the Core 2 Duo is a 64-bit processor, the EFI bootloader needed to be 32-bit for the DVD to be detected as bootable. I followed an incredibly helpful walkthru here https://mattgadient.com/linux-dvd-images-and-how-to-for-32-bit-efi-macs-late-2006-models/ though I have a feeling there are not too many other Macbooks out there that are this long in the tooth.
I'm also extremely happy because I've already been running Solus on my desktop PC as my primary OS for several months now and I can honestly say it's my favorite distro ever, so this is especially awesome to be able to have it on a portable device now.