I just built and tested this one. To me it sounds like the space fuzz but more full. No hiss issues here. Slow metallic swells with gain up and full guitar volume. The softer the notes are played the more "normal" the sound you get but it is still super fuzzy. The switch seems pointless as is. The 4.7n sounds dulled and trashy.. In a bad way. I will play with this value in the next few days.
Over all I can't imagine wanting both this and the Space Fuzz. I would recommend this one as it is less parts and sounds far better in comparison. Just my 2 cents.
Give a man a match and he'll be warm for a day.
Set a man on fire and he'll be warm for the rest of his life.