As a commando, I support this. I constantly respec between healing and dd depending on what the team needs.
Field respec is probably the closest thing you'll ever get to a quick dual switch of skills though, and while it's not super fast, it does provide a respec wherever you go. For what it is, I love it. It's so incredibly convenient not to travel to the fleet every single time you want to respec.
Anyway.. Cake.