Seem nothing special. Maybe Arctosa and Lycosa mirror is a marketing prank so we get the wrong image of the real launch.

sien . . Still only 2 type of keyboard

Tarantula and
Lycosa = Lycosa mirror = Arctosa

lycosa user here,
The first time i using it, it feel awkward. Not sure what the problem with it or with me.
Maybe its the rubberize key top or maybe because of the wrist rest. i dont use wrist rest on my previous keyboard.

After prolong usage, i'm loving my lycosa
I'm a simple macro user. So during my WoW time, i use simple macro when i'm inside Battleground pvping.
(actually I'm AFKing haha, macro it so your toon move randomly and wont get kick out from pvp for AFK)