From `man tmux`:
```
load-buffer [-w] [-b buffer-name] [-t target-client] path
(alias: loadb)
Load the contents of the specified paste buffer from path.
If -w is given, the buffer is also sent to the clipboard
for target-client using the xterm(1) escape sequence,
if possible. If path is ‘-’, the contents are read from stdin.
```
By adding '-w', we can get `load-buffer` (and `clipcopy`) to also send
the copied buffer to the client, allowing for easy copying tmux buffers
into the local client, which is useful in scenarios such as ssh+tmux
remote sessions.