The NEX and the V1 has it own strengths. If APS-C sensor quality is important go for NEX. Another person might prefer V1 superior focusing ability. Being new, the question is to ask oneself if he is a early adopter or one who play safe. We can't be both. If nothing is going to change if you get/did not get the V1/M43/Nex, go for the V1 especially if you are a Nikon fan and wants a fun camera to play with.
Or is it more suitable as a backup camera compared to the NEX which has a better suitability as a main camera? Or is the 1 series a fantastic setup for those looking to reduce their carry load? Hope to hear more from you guys.