A synthetic training hand-and-a-half? I'm there!
There are a number of existing thread on this topic. Generally speaking, this is airsoft. We have guns for a reason. Rubber knives are often accepted, even encouraged, so long as you remember most people are there to shoot. Kills are generally a simply tap, nothing fancy or potentially dangerous.
People are typically ok with rubber weapons filling a niche, but if you start getting silly and bring swords to events where it's not appropriately themed, you'll probably get laughed at.
"The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."