For such a short integration it has turned out pretty good! At Unity gain I believe Glenn uses 60s LRGB so you're probably under exposing a bit there but it is still a good test run
What could have been causing the cosmetic issues is only having 5 subs. At 10s the SNR is going to be pretty low in many areas so any variance in noise over those 5 subs could be coming through and being removed.
Glad that you're out under the stars with our own data to play with!