Nice writeup!
Even if it's not strictly soul scene it maybe also worth mentioning that there's been a couple of mod and scooter events and garage/psyche-oriented dos over the years in Gothenburg. I don't have any exact dates for those.
The Soulastatic summer nighter in August is usually one of the highlights of the year. People travelling from the rest of the country, great venue and DJs, meeting up again after the summer, nice time of year too... looking forward to it already!
Another slightly related thing, Rodge and Fredrik from Soulful Lounge are now running a record store in the west side of GBG.
Have had a lot of good times and met both wonderful and weird people (sometimes both!) over the years...