Take a look at Luigi Crescenza's site at www.leicatime.com
He makes a great neck strap that has For Voigtlander beautifully embossed on the strap pad (the word "For" is written in script).
The strap is beautifully made, and includes the little protective tounges that you mentioned. They are not terribly expensive.
I have dealt with Luigi extensively in the past, and have found him exceptionally congenial and reliable.
Best of luck!