I had the string only for one week on my bass. Max. playing time 3-4 hours.
For my french bass they are (for my taste) a bit too mid-frequency emphasized. I think they would work great for dark basses to feature the mid frequencies and the high frequencies to get a nice pizz tone. They do supply a nice bassy tone. Imho not suited well for arco.
I ordered them from Gollihur Music für 148,- USD plus customs/VAT and shipping
https://gollihurmusic.com/7710t-white-nylon-tape-wound-upright-bass-strings/
I shot a short video (iphone) so you can get an impression. I'll send you the link upon request.