Well... of course we're interested! :D
Nigel had a crank done at the end of last year for his Mugello Replica, by Chris Appleby. From what I understand, that was with alternative bearings too, but Nigel wasn't told what application the bearings were from.
The bike's still running strong as far as I know!!
Of course, if you can source the correct bearings for a reasonable price (and there is an advert at the top of the list in Classifieds!), then it may make sense to use the genuine OEM parts.
Andy.
NSR-WORLD.COM
Note: NSR-WORLD.COM authorised the seller of the bearings to advertise on the Forum, but has no affiliation with the seller, or used their products.