Maybe look at this less as competition for conventional motorcycles, and more as an alternative to the bigger maxi-scooters?
My wife loves her Triumph Trophy for high speed, long-distance riding, but it is top heavy and hard to manage at low speeds. (She had a low speed drop on our ride last weekend - now we're waiting for replacement turn signals from the UK and trying to decide on repair vs. replace for the lower fairing

)
She is interested in adding something lighter, lower, and lower CoG to our stable, and is seriously looking at 400-600cc maxi-scoots. I could see the DN-01 also fitting the bill.