[smscott]

Absolutely. There are accents, idioms, and even different signs for the same word that may vary between region, generation, and personal history with the language. e.g a southerner can likely guess someone is from the northeast with high confidence and vice versa. People raised Deaf can often tell if another person is hearing, or someone who was raised mainstream without access to sign language until later in life. There can also be family/hyperlocale idioms or even individual signs that won’t be readily understood outside the group; I think this is true for most languages as forms of inside jokes and the like. Two words in ASL that I’ve noted have a few distinct signs in different areas are strawberry and mean (“he is a mean person”).