A few of the statements in this thread seem to be based on the misconception that the weapons used in the different stances are forms of the same weapon. That is not the case and while it may have appeared to be the case in the past it was never directly stated to be that way and since it has been stated that the various angel and demon weapons will be found seperatly ( and Eryx has been directly shown without an angelic equivalent) the possibility of Angel and Demon weapons being the same has been disproven. It is also worth mentioning that there are no human melee weapons other than Rebellion (the hud shows Osiris and E&I but doesn't show Rebellion) so there are no human or angel equivalents to Eryx.
The gun moves shown in this trailer are not new all three of them were shown in the early combat trailers.
My personal opinion of Eryx is that they look ridiculous and the name annoys me but they are probably going to be my most used demon weapon (they seem really useful and don't look quite as slow as Arbiter)
Forgot about divinity statues? Yeah...possibly you never used them in 4.
I bet you can't hold all of your weapons and can stock them in the statues like in 3.
I mean, how complicated is it to toggle weapons with the d-pad? I think you can carry 3 at each stance weapon.
And you have about 5 Angel and Demon weapons each at total.
Well the good points of arbiter is that it multi-hits at the finishing combo and is possibly one of the most powerful attacks that is shown now.
So using a fast weapon and changing it to arbiter makes it strong and you will have less chances of being attacked mid-combo.