guess i'll post this here as well.
i'm a huge fan of laminated straps... like the cinellis in the first post.
for those talking about using 2 single straps. i've got some ancient laminated alfredo binda straps on some old campy pista pedals. they're beat to hell, but are still super solid... and far superior to single straps, in hold and feel. the 2nd strap is looped through the front hole on the pedal. helps with slippage.
to the point of making 2 singles a double strap... you can always go with the Gucci double strap holder. highly recommended. get them at freewheel hayes, sf:
they even came in gold: