Bryce isn’t dead for Mac users. If you need to use it, there are options. When Daz puts Bryce on the development cycle again, they will update it for both platforms, most likely for 64-bit since even Windows users seem to be having some issues there.
If you don’t want to use Bootcamp/Windows or make a separate partition with Snow Leopard or even go the Parallels/VMWare route, then your only option is to wait, which is what I’ve decided to do.
It will come, just be patient.