I have not used any other leather glue; I read in a post Catbird9 had used Fiebing's and it was carried at a Michael's I stopped at. I will post a pic of the strap when it has had 24 hours to dry.
Not too long after I started rehabbing I was interested in seeing how these products would work on my shoes and boots. The products work great. I have not used shoe polish in a few years! First, what type of leather are the shoes?
I have short black Timberland boots that I just couldn't seem to clean salt from. Since they are old, I thought maybe it's time to let go. But I realized they were essentially the same glove tanned leather as my Patti. So after a wipe down with Lexol cleaner (mixed a solution in a small bucket), let them dry, gave a generous app of Leather Therapy (that ran out, so now I use CPR), let dry and buffed, and they looked very good. The next year, after more snow, salt, I doubled down and added Obenauf's Oil after the cleaning and LT, and again, they look fabulous. And it turns out the residue I couldn't seem to get rid of was the chalky residue Lexol condition leaves on black leather.
I have a pair of Taos pumps, thinner leather, but still seemed like it would respond to the general process. They were a slightly distressed tauod shade which felt impossible to match, which I wanted tp keep, so I cleaned then the same, applied LT sparingly, and since the leather sucked it, applied more, just with a lighter hand. I used a light app of Blackrock and they came out better than I hoped for!
For color loss for premium dark shoes, I would invest in Saphir products. Go to The Hanger Project website, I find it easiest to read abut and compare their shoe polishes and recolorant products.
Lol, no I am not a Saphir spokesperson.