I've been reverse engineering LEON3-FT SPARC v8 BE code, so I wouldn't say it's common :D. When attached to Ghidra through a MCP the things you can do with this are simply crazy.
It depends, first I ask myself if this didn't exist would I vibe code it myself, if I would, then is this good enough, might as well save my time and tokens on checking than building from scratch. Personal projects wise
Curious what MCP setup you use? I'm not sure which one I have wired up, but I have to restart Ghidra every time I change file. I think it's either LaurieWired's original or a fork of it