scrolls specifically say that they work like casting a spell.
also, the exact wording of the feat is, as pointed out earlier, "
your spells work normally. It does not say that your items work too.
'round here, RAW is LAW(at least for the purpose of theoretical debates, cause no "Sane DM" would allow half the shit we come up with). and RAW here only references spells. items are not spells, with the exception of scrolls which state they function exactly like casting the spell.
I would say that it would be a logical house rule, but any DM you showed it to would make this(
) face and then chuck the DMG at you, followed by a curbstomping.