WAR AF all has -some- possible use. Well, except the head, that's pretty much useless unless you're using it for the DEX, and that'd really be pushing it with the cost of a Walkure Mask or whatnot these days.
Hands - Passable WS gear for a time, as they lack the -DEX of Gigas bracelets. In the (incredibly odd) situation that you use a shield (Joy/shield /DNC build mebbe?) they could possibly have some use.
Legs - 3 ACC. Eh. A very slight improvement over, well, basically any ACC (or effective ACC from DEX) option in the leg slot until Exorcist Hose. In the light of decent options lacking ACC, like RK Breeches, they're not exactly a great option, but they're not completely missing the mark either. Personally, I used them in high-ACC set for when Aggressor was down on higher level mobs.
Feet - As was mentioned, can be a viable option until the later 60s simply because there's a lack of great options in the slot. Though, that's not to say there are -no- options >_> Some RSE/RSE2, Fourth Sabatons (2 ACC), and so on are also decent.
Body - Seriously, this is one of the best tanking body pieces in the game. Macro piece probably, and not all WARs may be trying to tank (usually happens anyway), but still...it's a stellar piece, just not for DD =P
IMO, during XP, most of it can be macroed in -somewhere- for a logical reason. At least in the 50s/60s. In the long run, it "could" be nice to have in the event that you want to do a niche build. But, otherwise, getting all of it means you can store it.
However, as none of it (save the body) is really standout for much of anything, there's no crime in just sticking to AH options.
____________________________•• Isiolia - Mithra - Pandemo... Asura FU SE ••
RDM BLM BST BRD NIN WAR PLD DNC BLU