The real power of this ring lies in Assaut/Salvage/Nyzul zones, where it becomes just so amazing.
But outside those zones it's still a wonderful ring and I use it full time. Comparing to woodsman's or snipper's the Accuracy -1 doesn't make such a difference, while attack+4 and the show-off pride when someone checks your gears to let him know you have cleared ToAU does ;-)
Good luck on Alexander, it's one of the most exciting BCs in the game but it's also quite difficult and requires some good coordination between party's members (having proper setup and skilled, pimped mates also helps :-) )