Thank you for all the replies! I have two monks in my party (a SC forbidden fist and a shattered pillar/soulblade) so I don't want a third one. It is going to be fighter/skald.
That's actually a great idea, I was thinking about choosing blackjacket but did not consider 1h style.
I did some playtesting, Sun and Moon does nice and WotEP, albeit quite slower at autoattacks, does great too against multiple targets (and with the plus of having Ofensive Parry). That said, having using blackjacket I could switch weapons versus single (Sun and Moon) and multiple targets (WotEP). Also it is good to have a 3rd weapon slot for empower shenanigans (Sasha's and The Weyc's Wand) and another for The Eye of Wael (for switching when getting bloodied to proc Form Fantasmic and then immediately switching back with no penalty) plus another 1h weapon with an active ability to have on demand.
I also tested offhand ranged weapons for dual wielding with Sun and Moon. I tested for on-hit effects and passive bonuses to see if some effect that could applt to main hand attacks or spells (something like Lover's Quarrel proccing in response to spells crits), the only thing I found is Current Rush's bonus crit damage applying to main hand attacks. On the other hand, A Whale of a Wand's charm effect procs quite often of Her Revenge because of the bouncing.