Aside from the usual driver errors that always occur with new hardware, well, I see nothing in that thread. There are two who seem to be experiencing enough problems to return their cards, but the rest of the group are experiencing maybe one or two issues that are to be expected.
as for the microstuttering... ive had SLI before and I couldnt stand the microstuttering... i hardly think anything has improved
Since when? 8-series? This problem has been greatly reduced this gen due to the higher bandwidth between GPUs. The X2 has a 2.0 PCI-E bridge chip on the same PCB as the 2 GPUs.