mkletch said:
You no longer threathen the area around you ... with that reach weapon. That is the distinction I am making. That section is talking about the reach weapons, and AoOs. If I forsake the reach weapon between actions ("Until my next turn, I am merely holding the longspear and will use unarmed attacks for AoOs"), I am giving up one thing (reach and a high-damage weapon) for a different thing (a low damage weapon, the use of which will provoke an AoO against me should I choose to use it) that is more valuable to me at the moment.
If that's what your character did, I wouldn't have a problem with it. (Although I might asses a -4 "off-hand weapon" penalty unless you have Ambidexterity.)
What I have a problem with is people who want to be able to take an AoO with either the reach weapon or the polearm on the same turn (this assumes they have combat reflexes, or that someone was within 5' of them and did something that provoked an AoO).
I don't even have a problem with someone who wants to Quickdraw an arrow after they are done making their bow attacks, so that they can threaten the area around them with it. It cost you a feat to be able to do that, and you still have a -4 attack penalty.