Will E-type Shimano front derailleurs fit World Cup frames?

[fyrstormer]

Like this one:

http://bike.shimano.com/publish/content/global_cycle/en/us/index/products/mountain/deore_xt/product.-code-FD-M770-E.-type-.fd_mountain.html

I'd like to be able to get a Top Swing derailleur if I can, and the mounting bracket that clamps to the BB shell is the only way I might be able to make one fit. Anyone tried it before?

[fyrstormer]

Anyone?

[shovelon]

Never tried it.

[fyrstormer]

I wish I could find a bike shop anywhere that has one in stock, so I could eyeball it against my frame. I've only ever seen one in person and it was on a Diamondback hardtail that could've just as easily used a normal derailleur. Kinda makes me wonder if Shimano actually sells any of them or just takes pictures of the prototypes and puts them on their website.