I can say i tried SS build with F+R rings.
To keep things shorts:
With Physical setup, and using ancients for fury regen, using seasmic slam - rumble.
All ancient IK gear without TT gloves with furnance, fury was managable but crits never went higher than 300mil per hit, ussually arround 250mil.
Which is simply not enaugh. Also you have to keep your distance from mobs and let your ancients do the tanking, survivability is mediocre at best.
WIth fire setup, same gear, but replacing SS for Hota with fire with GoJ weapon for fury regen, build works nicely, but again, without mortics and with only 100% damage boost from 6p IK, damage is loughable at best.
WIth TT gloves, physical gear and IK weapon, seasmic slam rumble (since i belive this is the best rune for it), seasmis slam become a bit more spammable but i dont own an ancient IK weapon, so crits were only 150mil-200mil range.
Suffice to say that you deff need at least mortics bracers for this kind of build to work.
My passives were weapon master, ruthless and rampage while using nerves of steal as a defensive passive.
The only bright thing about this builds is that they do proc mirinae gem quite often which managed to crit/hit mobs for arround 500-1b range. But not often enaugh to make it worthvile.
I hope this helps and gl!