I have a couple of longnecks. Their voicing is somewhere in between a standard soprano and a concert, due to their extra scale length, but still with that sweet, sweet, soprano tone, because of their smaller bodies.
Ukuleles are classified by their scale length so the instrument you describe would be a concert with a smaller than usual body so, yes, I would expect it to sound like a concert but just with a smaller body.
The biggest difference you’d find between a standard soprano and a long neck soprano would be, due the longer scale, the bridge must be moved further back towards the end of the body, away from the soundhole. If you compare two ukuleles of the same model, except for one having a long neck, you can see the shift in the bridge placement.
In the acoustic guitar world, it’s similar to a comparison between a 12-fret and 14-fret guitar. The 12-fret tends to have a warmer sound and the 14-fret have a snappier sound. I’ve read reports of the same on long neck ukulele’s, that they’re brighter.
I had a Lehua long neck soprano about 15 years ago that I absolutely loved. It was my Goldilocks uke. Just right between a concert and a tenor, with the "plink" of a soprano. An unfortunate accident crushed the body, leaving only the neck in tact. Hoosier Mike at Mainland Ukes suggested (right here on UU back when I was ukecantdothat) that I make a cigar box uke with it. It remains my favorite to this day. With a MiSi pickup installed, it's awesome. Didn't put a sound hole in it to minimize feedback and make it quieter for gentle, late night strummage.