I bit the bullet and purchased a wheel from eBay Germany, since I wanted to hang onto my wheel, and got the seller to send it to IL Motorsport in Germany for refurbishment - saved me postage and handling from Australia to Germany if I bought the new wheel here.
The wheel arrived yesterday and I picked it up from the Post Office today.
Those Germans sure are efficient, I bought the wheel August 25th and it arrived September 08. I suspect they have one of every type already in stock and sell you the stock wheel and refurbish yours as their new stock.
Apologies for the photos below, they were taken this evening and the flash really contrasts the colours.
Here's my original custom wheel, the grey perforated inserts match my doorcard trim, gear shift boot, handbrake boot and leather on my seats.
The wheel just felt too "bony" after DD the SP23 so I wanted to something about it and I've always wanted a flat-bottomed wheel to make entry/exit easier:

Here's what the two wheels look like next to each other on my kitchen floor - the square tile grout gives some perspective:

- unfortunately the flat-bottomed wheel is only 8mm shorter; at least it's ALL at the bottom of the wheel
I tried a photo directly above the centre of two wheels one on top of the other, wheel face to wheel face, to show that the original wheel was "longer", but you couldn't really see the original wheel underneath the new wheel,
The next 2 photos show how the flat-bottom has been achieved.
* Top photo is the original wheel
* Bottom photo is the new wheel
* Green circles show braces connecting rim to hub (interestingly the original wheel used thicker flat braces whereas the newer one has thinner round braces)
* Yellow circles indicate the differences in braces; the original wheel used the same brace as the horizontal braces whereas the new wheel has a very thin rod connecting it)


- whoops, that circle on the right should have been green
It seems that the bottom of the T-hub has been shortened.
Installed:

It looks great and feels chunky (in a good way).
Will I notice the extra 8mm of leg clearance?
Probably not, but it is there so it will be slightly easier to enter/exit.