At worst the knot will get a bit loose from time to time (like maybe once a year), and then it takes a few seconds to tighten it again.
I expect my shoes will fall apart (they're already pretty old) before this knot unties.
[1] - https://web.archive.org/web/20051203081429/http://web.ukonli...
If you're wearing hiking boots, you can go once around the back to reduce the lace lengths and then make the knot.
Super easy to untie, as well, if needed.
loafers sole isn't usually strong enough for outdoor use. old sneakers with the rear part bent in and laces tightened enough to slip in with ease while not falling out are great for quick trips like to take out the trash or walk the dog, so you don't wear and tear your good shoes.
Also on my Solovair boots, I used quick tight lacing [0], which gives you the outer "straight lacing" appearance but also allows you to make the boots very tight without spending 5 minutes to tie them. The main issue with this technique is that the laces can shift, but I marked the center of the laces with a Sharpie to serve as a guide.
1. Pick up the laces. 2. Cross the laces over like this... (but don't have them looping into each other like in the picture) 3. and back, leaving loops either side 4. Take the left lace underneath... 5. then back over the top... 6. and wrap round underneath again... 7. and back over the top again. 8. Now similarly with the other lace... 9. underneath, but the other way... 10. then wrapping round as before. 11. Push the lace through the four centre strands. 12. And the same with the other. 13. Then tighten the knot up. 14. Finally, here is an alternate one with an extra turn (at step 10.5).
This is a great shoelace knot as it loosens and cinches tight without untying.
It's almost exactly like the "standard" shoelace knot I've used most of my life, but with just an extra tuck, and it virtually never unintentionally gets untied. It's fast, easy to put on and easy to take off. Highly recommended.
[1] - http://www.fieggen.com/shoelace/turquoiseturtleknot.htm