Mithril 2hs vs FBSS/ Investment?

[Broor]

Hey guys,
I'm a 40 DRU on Green and one of my best buds(EQ noob that started on green launch with me) is playing a 39 WAR. We've gotten his crafted armor done, he's rocking an axe of the slayers (we've got an enchanter buddy playing with us so I thought that the haste from the exe axe was wasted on top of ENC haste), and I feel like his gear is mostly in order except for equipped haste.
I feel like the Swirlspine isn't the solution we're looking for at 16% for 8.5k, when we could get a Mithril 2hs at 31% Haste for (optimistically) 7.5k. Also, Mithril 2hs still dominates classic ratios (pre-raiding). My concern, however, comes with how much the value of the Mithril 2hs tanks come december when Kunark arrives. Therein lies the value of the FBSS (15-16k), which at 21% maintains its value much better post-expansion. Any recommendations from the vets? My thought is that with the Mithril 2HS he's sitting pretty until December, and then a TBB could fill that waist slot nicely, but I've never mained a warrior before... We've saved enough for the sword but not the FBSS.
Thanks ya'll,
Broor