I can't find any feedback on the internets for Tantan/Sepaph's GR042 or GR043 (I can't tell the difference between the two).
Anyone have any experience with either?
I'm pretty sure that frame is the base for Twitter Gravel.
http://www.twitterbike.com/entwviewbike/800.html
I found one review on YouTube by Denin Hauer.
youtube.com/watch?v=QAeZAoofY6c
Thanks!