Nice results. The shadows in your photos look emptier than I experience with this film (and I use a value of 320 ISO); but as you say, that probably reflects metering styles.
I haven't seen those wipe-off dots. I bought my first two rolls of Double-X from Flic Film, but then bought a 400ft roll to spool myself. I can't imagine why CineStill repackaged Double-X would have anything 'extra'. I haven't noticed ragged edges either, but my experience is with 35mm.