Big deal is vanilla warrior doesn't have access to temporary resist
acid, lightning, or poison, barring the rare and juicy find of Colluin
(or its randartification, which would have the same activation).
Of these, acid and poison aren't so significant, because poison is
capped half as high, and so long as you keep all normally-AC-granting
equipment slots occupied (but none with [3,-3] armours or the like,
i.e. none granting zero or less AC in those slots), acid effectively is
as well.
Which leaves lightning. Storm Wyrms breathe somewhat under full
strength, fortunately, but there are some other heavy hitters with
lightning down deep. Most are dragons. This makes Taratol invaluable
swap for warrior if they can find it -- it grants immElec and has
xdragon to boot. Just don't leave FA or something similarly critical
uncovered when you swap ...
>> Stay informed about: How important are temporary elemental resists?