Well, it works, and as Tony says it's a trivial job to de-solder it should you want to use it as a master somewhere else. The only real issue I can think of is if your soldering wasn't too good and you put a *huge* messy blob on there instead of making a neat little join. If that blob later fell off and started sliding around inside the machine I guess it could cause problems. I didn't do that so I'm not worrying :-)

Steve.