Played a bit in stock post-lemix 23 ilvl gear for about two days. While there are some good ST DPS windows in open world with active void meta (until it's not fixed), so far it feels like there's no chance it will be possible to solo dungeons in this spec without some broken gear involved. Survivability is pathetic (no on-demand heals while self-heal is nonexistent) and Voi Ray damage is too sad while being basically the only AoE spell. Maybe it will be possible to kite some stuff with basic rotation but any loss of control for more than 2-3 seconds seems deadly as it can't facetank (but sometimes need to go in melee zone for Voidblade slaps).
Maybe proper gear with gems and enchants can fix it but overall it feels that there are much better options around.