I too have had the Mcleod Al one for just about a year, with the Luk clutch. No problems. Yes it has a steel friction surface for the clutch, that I beleive is replacable if you send the flywheel back to Mcleod. It is also SFI approved, as Duffy was mentioning.
I am not sure how many miles the rest of these guys drive, but My SC is the daily driver. Approximately 50 miles a day, if that makes you feel any better.