I don't know that I will have to, but it's more just out of satisfying both my parents and just so I feel saferIf I ever needed to actually draw it, I probably won't be on the bike.
I'm actually looking at a Spike. It's very light (2.3 oz.) and is only 8 inches overall. It is a neck knife, but I'm going to have a friend make me a low profile leg holster.
I love my CS spike. I have the newer model with the Grivory textured scales in the clip point. It reminds me of a little bowie.