"15足あて2週間のローテーションがめたら20年はOK." - Tony Gaziano article on Men's Ex, ultimate shoe maintenance edition
15 pairs rotation for two weeks should last 20 years.
Vender claimed 20 years equates to 40 years on the internet and 15 years in real life.
Had similar conversation with Mr Car; he strongly advices against conditioners and said cream/Polish is enough.
And yes, renovator is only good for highly polished leathers and does dry out antiqued ones.
Yes. Blake stitched can be done w/ a closed channel. See video below for breast to breast closed channel blake/mckay construction. Don't think closed channel and stitch aloft has anything to do with how outsole is attached to the midsole/welt/insole/etc.