Bought a pair when a local LBS went out of business a few weeks ago, got 'em for $90bucks- I would not have bothered otherwise, as my Shimano WR60's are very stiff and comfortable. The toe box is typical Sidi, narrower than Shimano. The curve of the outsole, at least in the small sizes (38) makes Speedplay cleats not quite fit, even with the #4 spacers. I need to call Speedplay tomorrow to see if they have thicker shims. The Shimano fiber soled shoes hold their own against them and are a much better value IMO. I guess if you have really narrow feet, the Sidi might fit better.
My Shimanos and Sidis are both white, and I expect them to get dirty and I don't worry about it.
Tzvia- rollin' slow...
Specialized Ruby Expert/mens Bontrager Inform RXL
Specialized SWorks Safire/mens Bontrager Inform RL
Giant Anthem-W XT-XTR/mens Bontrager Inform RXL
Fuji Newest 3 commuter/mens Bontrager Inform RL
Novara E.T.A commuter/mens Bontrager Inform RL