I decided to pull the trigger, and my experience is similar to yours. I do have lume down the sides of the minute hand, and the stars on my dial shine quite well in the dark. Thanks for the winding tip as well; one serious objection I have is the lack of any literature or instructions with this watch; the sole provided brochure was for Azimuth watches generally, and had not one reference to the SP-1 specifically.
As you say, feels very comfortable on the wrist, and looks like hella fun. And as, like you, I got a drastically reduced price, I don't feel I overpaid for an attractive and not unimpressive toy.
Best,