One of my favourite Clapton noodles with help from the Beatles
'When My Gemming Gently Leaks'
Norwegian sewn without midsole/welt is harder to service/resole as upper are thinner and won't be able to sustain as many times of outsole stitching/restitching compare to a welt/midsole.
Norwegian sewn with an welt or midsole are both more serviceable as outsole are sewn to the welt/midsole. At the same time, shoes will look slimmer with an turn-out welt vs an midsole.
It should be as waterproof as other stitch down constructions like Veldtscheon.
The spinning stitching, if any, is more cosmetic but helps water proofing/tightening the inseaming.
How many resoling do you figure that the upper can sustain? Without reinforcement of an welt, outsole is sewn directly onto the upper for the said pair, and resole will have to go through the upper...