That's interesting. I've been making a grid block for Toolbelt and had the same problem, the name clashing with other blocks.

I've now added a TB prefix to all Toolbelt blocks.
https://github.com/BinaryMoon/wp-toolbelt/commit/0f2997c3d81baa7263ee55e7d5dc4c1e0d5e04a3

It's a bit messy to look at, but much clearer to use.