I'll give a big +1 to any Sena product. They know what they are doing and what their customers want.
OP I think a standard set of bluetooth buds or headphones will work for you but the advantage of going with a motorcycle-specific solution is being able to change tracks and volume with gloves on. The 3S looks like a good fit for you although I have never tried it. I personally own the SMH-5.
Not sure but the Senaclaims to have universal compatibility so in theory it should work. I'm sure there's a caveat somewhere but maybe someone experienced with this aspect can comment.
OP I think a standard set of bluetooth buds or headphones will work for you but the advantage of going with a motorcycle-specific solution is being able to change tracks and volume with gloves on. The 3S looks like a good fit for you although I have never tried it. I personally own the SMH-5.
Can the Scala's be paired to non-Scala headsets? I'm in the market for one as well but need to communicate to Sena/etc.
Not sure but the Senaclaims to have universal compatibility so in theory it should work. I'm sure there's a caveat somewhere but maybe someone experienced with this aspect can comment.