John Goldsby provided this link earlier that gives some info on the different strings available:
The 2016 Basso AP strings that have been the major topic of discussion recently are all metal wound, but Gerold also makes sets with plain gut or synthetic wound G and D (B-Roque, J-Roque, and Wrap). The synthetic wound ones supposedly still bow well, but I have never used them myself. In the sound samples in the link above you can hear the J-Roque (all synthetic wound) being bowed.
Gerold himself would probably be the best person to talk to.
Hi Michael, I listened to those recordings. The arco sounds closer to pirastro oilv/eudoxa sound instead of plain gut. That's why I was wondering if anyone has a string that sounds and cuts through like plain gut, but can last a long time. I need to change my plain guts every 4-5 months due to terrible humidity in my country. I will message John and Gerald as well though, thanks!