Well,
Having had a good moan about UM and Ampcity over the last few weeks I've been able to try out the flawed product before it gets sent back for a refit and upgrade. The fit and sound of the SE530s is brilliant, and if it was what I'd ordered I'd be happy. For those interested in an SE530 reshell, do it! The excellent sound of the Shures are retained and with the superior isolation I've been able to appreciate them even further. Just be prepare to wait as most of the posts recently have said.
I was concerned that the fit on the right ear was a bit loose but this isn't the case, more that the left is totally spot on and seems to have a little lip which latches onto part of my ear to hold it in place even better which the right one doesn't. The right still fits great though and offers brilliant isolation, just not quite as good as the left but not noticeable when listening to music even on a low volume. Think I'm just very picky...
Gonna miss these when I send them back on Monday, but looking forward to getting what I ordered. Ampcity were very understanding and apologetic and have assured me that the wait won't be as long this time around. Might even try a different colour scheme as I'm not that happy with my first choice. Every cloud, and all that...