I've conducted several tests on the DSX-90 mount.
First of all, I tried a blind alignment, i.e. to level north and to do autoalign. The automatically chosen alignment stars appear to be in right direction, and then I made a GOTO to the sun (as a special asteroid), and it's in good accuracy.
Second test was to test its capacity, I placed my C5 there, carefully balance it and it moves flawlessly. Sounds like a good portable platform for me, in case photography is not needed, and in that case, my Takahashi TG-SP II would fit in.
Sounds like my Unistar Lighter has no suitable use case now, this DSX is not much heavier than the Unistar Lighter but it can track and it can GOTO.