Buying quality items will make a difference in the long run. It make take longer for you to buy a good leather sporran strap, but it will last forever with good care and maintenance.

Buying quality items does not necessarily mean that the item will not cause damage to your kilt. Even high end retailers like Gucci, LV, or Ferragamo have flaws. I've bought shoes and handbags from both retailers with flaws that have caused problems. Leather edges that have scraped my ankle, or a handbag clasp that has rough edges that catch on a scarf or coat. However, especially with Ferragamo, which puts out a much better product in my opinion, with good polishing, regular repairs, etc., those shoes and handbags will outlast me!

Why not try wearing your new straps or chains over an old woolen shirt for a few days while around the house? That way, you can look for any rough edges and find any flaws in the leather finish or metal clasps before you try them with your kilts and make any necessary repairs. Also, a good quality house like those listed above will do the repairs for you.