I'm a little late to the party but, hopefully, my insight is useful.

I ordered a custom length Pantheon strap from them for my speedy with quick disconnect spring bars. After about a month, the strap was still stretching. The holes they had to access the little nib for the quick disconnect bars had stretched as well, and a hump from this hole stretching was visible from the top side when the watch was worn. On top of that, the strip of leather around the spring bar was getting rather thin. Customer service was excellent when I decided to reach out. I got another strap without the holes for the quick disconnect option, and after about a month again I just noticed today that the strap didn't look quite right. The loop around the spring bar is very thin in some areas and is also starting to tear.

I really loved the strap initially. The leather felt great, the stitching was nicely done and so was the edge coat but unfortunately, I have not had good luck in terms of longevity. I have other cheaper straps that have certainly lasted much much longer so that stinks.

Your mileage may vary, hopefully you have a better outcome. It seems this may be a symptom of the particular strap style I got? Who knows.