I've been playing a Mender Aurashare D/Wh Tempest in PvP and it feels decent enough, it's a lot of healing and utility and great vs condi. It hits like a damp potato though, except for it can easily stack 25 might to allies (using might blasts and wh 4 in fire) and air wh 5 does a ton of damage and vulnerability if you aim it right.
I've been running warhorn because of the easier access to extra auras and the condi cleanse and water field in water for the extra healing, and mainly to provide a ton of might to allies. The CC is arguably better than focus, Gale is a nice knockdown but it's on a long cooldown (40 seconds), Cyclone is on a much shorter cooldown (25s) and is AoE, it can pull multiple foes together into a damage spike. Comet is also only a daze, warhorn water 4 is a heal, condi cleanse and knockback.
Seems like the main plus points of focus are the two big utility skills - Swirling Winds and Obsidian Flesh. Swirling Winds' need is negated with Warhorn 4 + "Aftershock!", since a reflect is more damage than destroying a projectile. Obsidian Flesh is pretty neat though, it's defintely harder playing without it, though I usually slot mistform in that case. Stomping is pretty easy with earth 5 for the blind, and mistform is shorter duration which is better for contesting points. However, you can still use skills during obsidian flesh.
Seems like Warhorn is better vs high condi and Focus is better vs high power? Perhaps I'm horribly wrong, but I've had a lot of fun playing Tempest lately and I desperately wish it was good, and it's been fun trying different weapons.
Basically wondering on peoples' thoughts of running warhorn/focus, and which is better.