As for the scales, I think LookNoHands made a typo. It doesn't make sense when the 5th is flat. Also the double harmonic isn't the same as the Hungarian minor (gypsy).
Double harmonic : G Ab B C D Eb F# G
Hungarian minor : G A Bb C# (enharm. Db) D Eb F# G
The hungarian minor is the harmonic minor scale with an altered color tone, #4. Or it could be seen as just a blues note. Whichever one prefers. Cool scale.
"My whole life is a dark room...ONE BIG DARK ROOM" - a.f.i.