Hello, I know many of you have been waiting for this hat to go all class, I myself have also too. Although if you really would like to see the safe'n'sound on your favourite class, then head on over to loadout.tf because there is a way where you can equip the safe'n'sound on classes other than engineer. Now instead of just waiting for it to be released as all-class, (thats if that happens), you can now view it before it would even get released. I will leave a link to the site and if you're too lazy to do it yourself, I have uploaded images of the safe'n'sound on all the classes, but just note I just equipped what looks best with the safe'n'sound. I hope this helped!
~115
~PS To make it shown on other classes, turn off filter per class.

Make your own loadout: http://loadout.tf/

Classes with the S'n'S equipped:

Scout: http://imgur.com/a/NzsDA
Soldier: http://imgur.com/a/xutgC
Pyro: http://imgur.com/a/LHUb5
Demoman: http://imgur.com/a/MJgVD
Heavy: http://imgur.com/a/xN80T
Engineer: http://imgur.com/a/q7jda
Medic: http://imgur.com/a/dUiSj
Sniper: http://imgur.com/a/lxyxW
Spy: http://imgur.com/a/iMuDM