Maybe my priorities are slightly different from most other folk, but on the evidence we have seen and heard so far, these basses appear to be exactly what they are: another pair of fairly generic and uninspiring - sounding cheap basses, albeit played by Marcus Miller.
The Fender - style bass looks great, but sounds budget, even in Marcus Miller's hands. The other bass is self-consciously modern, and as such looks rather dated, paradoxically enough. I suppose these basses would be great for a beginner or for a bit of fun but there doesn't seem to be much to recommend either beyond their snappy looks. Reading between the lines, even Marcus doesn't appear that enthusiastic to me.
The next time some in- the- know muso starts giving you the " It's all in the fingers " routine, show them these vids.