Despite all the 'modern' materials available today I haven't found anything I like better than this leather camera strap I crafted from a belt in 1970; 40 yrs old now and it just keeps getting more comfortable with age.
If I ever get a "round-to-it" tool I'll revise the attachment points so it's easier to move from one body to another - even so, it's paired with five different cameras since the original Spotmatic. That, or build another one. H2