Charlie,
“I am unaware “
That is not an answer (factual as it may be). I suspect that there may be other items you are unaware of as well. That you are unaware is even less an indication of actual status than anecdotal data.
Avik,
“Akuperma, do they also eschew pigskin and alligator skin belts (not to mention footballs, which are evn called pigskins)) and alligator shoes?”
It would be a problem if they would chew, not eschew.
Footballs, although called pigskins are not made from pigskins.
Anyway, none of the items you mentioned never come into contact with food so its a moot issue. However soap products are used on tablecloths and to wash utensils, and it is not clear that they would ever have been considered “nifsal” so your comparison is just uninformed silliness.