1) It worked for me.
2) Which SG doesn't neck dive dude? SG's are the number one suckers to neck dive.. Especially for the 61' reissue and the Epiphone G400.. The body is much more heavier than other Standards/Specials.. Plus the position of the straps just makes sure it neck dives, hence the reason Iommi's SG had the strap lock pin replaced at the horn of the SG, rather than at the back..
As mentioned in Sub's review of the G400:
1: I dont see how LOCKING the straps to the buttons will help the neck diving issue at all. its the Strap thats the concern not the Strap slipping off the Strap buttons. I dont know what kinda strap your using, im refering to straploks like the ones from DiMarzio which are also Nylon straps as compared to the Regular straps that most people use
2: i dont know what kinda SG you play but mine does not, as far as it is in an upright position it where it's s'pposed to be? it doesn faceplant itself, unless its already more than half down then it will dive on its own~
also it depends on the height you have it at i guess?
I've had 2 types of explorers before~ the Epiphone and the LTD.
NOW
the Gothic epiphone is SUPPOSDLY made out of Mahagony for the body with a set neck and it DIVED the Shyt so much that i could hardly play it.
then i got the LTD and its made of like what? Agathis? and a bolt on neck, the VERY first time i strapped it on, the neck dive was not even half as bad as the Epiphone...
so i switched the strap to the back and its perfect now. Nylon strap. waist heigt, perfect.
So all im saying is. it pretty much varies on the guitar that you've got, not all woods are in Equal weight even if its the same breed or " as Specifications "