To tell the truth, I have seen SwS use pretty much every A grade armor. Alot seem to use Tallum heavy with a focus or crit damage sword and a shield. Others have used NM or DC for the added hp/con bonus. Not sure on the dyes though, but Im thinking the stats are either left alone, or maybe an increase in DEX... ?? Not to sure on that though.
Just do the +4 str +dex -8 con and use majestic heavy you will be dishing out a lot of dmg and you won't be stunned so easily. SWS already has magic resistance, spirit barrier and song of warding so I wouldn't worry about sleep or root.
gg. Use duals also like double keshanberk for the atk spd bonus