I haven't even bothered to check if the Haste on the Blessed feet (only 2% if I recall right) is enough to lower the recast on any of my Cures by a second, but quite honestly, I just haven't bothered and I have no problem full timing the Clogs if/when I'm Curespamming, mainly because my Cures are casted from the menu and not macroed.
It is far more likely to make a difference on spells like Esuna/Sacrifice/Erase, so I would definitely look into those when it comes to testing out your potential Haste.
I, for myself, wear Blessed Pants and Hands on for Cures. Besides Cure V, which I use Jet Seraweels. I wore Blessed Trousers for a while, but then switched back to Jet Seraweels.. It's pretty rare I bomb spam V, and need it to be up as soon as possible. I'd most likely alternate between V and IIIs. That said, I'd rather get the MND than the 1 second.
Anyhow, last I checked, wearing the Blessed Feet wasn't lowering recast timers on any Cures but V,
You do want a Haste build for Haste and Erases cycles, as well as Esuna now;
Capricorn Staff, Goliard Saio, Blessed Hands, Trousers, Pumps, and I added Swift Belt. I got Capricorn staff because I hate Walmart Turban with a passion and avoid as much as possible to wear it.
Also, if you aren't the type of WHM that haste themselves (I'm not, I only do it in two situations: Dynamis Xarcabard and what I'm about to say.); you need to Haste yourself in situation where you will constantly need Esuna. I only have one situation coming to my mind when I talk about this and it's Einherjar.. Leeches, Wivres, and/or Flyers, but mostly Leeches and Wivres. They SPAM Acid Mist/Demoralizing Roar. You need to take Attack Down off as soon as you can, since it could cost the run, especially if it's a Wing three.
To answer the original question. Cure Clogs. Don't bother with anything else. You've got all the other slots (aside from Body and Weapon) to do that.
If anything, just haste yourself full-time. That should probably even lower Cure IIs and IIIs. Edited, Jun 20th 2009 12:13am by Sissiae