Hello Simon,
I've just introduced myself on the forum as a new member.
Not long ago I purchased a Grace MX 2 Urban in brown from Germany after much searching for a UK retailer of the marque. Must say the bike is all I had hoped for and even with shipping it came in at competitive price. Thanks to the Bosch drive system being widely used I was confident in importing this in terms of repairs or servicing being possible if needed in the UK and I was equally confident if a repair was ever called for to the NuVinci CVT or Gates Carbon Drive as these are being adopted by many marques.
My concern in your respect would be the motor/battery set up in terms of any future attention or spares being needed, it could be that other machines across other marques use the same sort set up, not sure though without going into a bit of research. If you wanted to acquire a Grace bike I can wholeheartedly recommend Denfeld of Bad Homburg Germany where an excellent English speaking chap called Marc Denfeld can sort out your needs. My bike arrived in perfect condition with tracked, insured shipping at 125 Euros (on top of the retail price) promptly via DHL. All the best in your quest!
Adrian