drove a mineral grey/orange leather car today, DCT, and well... i can understand why you went manual , and grey!
good bits:
overall i liked the colour - understated and beasty! and the interior/gadgets/comfort all v nice. nice to drive, handling is good, not sure the sales guy was quite up for the test i had in mind! effortless speed (unsure about this as didnt feel as fast as it actually is), and the HUD is cool - could see myself being attached to that quite quickly.
bad bits:
wasnt impressed with the DCT box really, whilst changes are fast, the latency between requesting a change and receiving it wasnt that great, even in m1/m2 modes.
Didnt like the steering wheel, felt thin and reminded me of the non-M cars. duno if the M-perf one fixes this?
the noise was a bit strange.. mainly the total lack of it at low rpm, and almost too much at high rpm, i expected to barely notice the augmented noise (understanding why they do it i had no negative thoughts about it going into the test) but really it was so obvious when giving it the full beans it made me laugh out loud and i was kinda disappointed. It was much louder inside than outside!
i think an extended drive is needed to really start to get used to it and see if it ticks the boxes, but overall today i was sad to find myself with mixed opinions rather than running to sign an order form, i think im personally more attached to the NA engines than i realised! i really think you maybe onto something with the manual, im tempted to try and seek one out for a test.