Got both 23 and 29Oz denims. I don't feel they are too rigid to wear. Perhaps they are washed once already. The patch on my 23Oz is also leather which is same as 29Oz patch. The hammered rivets look weird but I quite like it though.
I couldn't feel any difference when wearing both 23 and 29Oz. The weights of these 23 and 29 Oz denims are almost the same (size 33). I expect 29Oz to be much heavier but they are not!! Perhaps the fits of the jeans are different. The 23Oz has darker color and red selvedge while the 29Oz has pink selvedge.
23Oz (RNB-108) left and 29Oz (RNB-125) right
Patch leathers on both RNB-108 and RNB-125. The quality of the leathers are quite average.
Twisted after first washed from factory
29 Oz top and 23 Oz bottom
Thick selvedge on 29Oz RNB-125