I'm about to install the Alpine EZI-DAB in my '57 plate FF TDV8 Vogue and I was wondering what you girls and boys have done antenna-wise.

The EZI-DAB comes with the stick on window antenna, but I'd really prefer to use something a little more 'permanent'. I see you can buy splitters to use the existing roof mounted AM/FM antenna and I was wondering whether any of you have gone down this route. All advice greatly appreciated.

I used the stick on variety and put it on the side window just above the parcel shelf. Because my windows are drug dealer tinted, you can't even see it. You'll need an extension to the cable depending on where you place the main box.
No issues with reception, which is always patchy with DAB up my way.  Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey

Mine's on the NS windscreen - it's very neat and not at all intrusive.

So was mine until I installed a Blackvue camera. Totally destroyed the signal every time I plugged it in  Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey