`~/.local/bin`: yes. Both Ubuntu and Fedora add ~/.local/bin to the user's $PATH.

Conflict: if for some reason you were to install the debian and then this .tar.gz through `install.sh` you'll end up with two desktop icons and two `brackets` executables in the command line. I'm not sure which one takes precedence. Based on Fedora's default `.bash_profile`, I'd say that the one in `~/.local/bin` will take precedence.

File system wise, no conflicts unless for some reason you unzipped the archive directly on top of the location used by the .deb package.