The benefits in C++ became apparent to me pretty much as soon as I started using it. But I think it's all a matter of execution, how you code, how you set things up and how you stick to that initial execution.
In my case I was converting a DBPro game for iOS, using Xcode and OpenGLES. So I was starting with a practically finished game, and all the meat of the project, the game logic could be transferred fairly easily. At that level, the main difference between C++ and DBPro is syntax - game logic tends to be it's own standard I find, and it's not really a case of learning C++ when you have a game already logic'd out (yes that's a new word and yes you can use it

). I think that after years of using DBPro, you start to work in ways that are just more effective in C++. Hard to explain because everyone is different, but I don't feel like I've learned C++, I just haven't let that stop me making a game with it. Now, I'm just annoyed at all those C++ books which put me off even starting to learn it.
I didn't bother with an SDK, the real fun is when you make your own functions, especially with OpenGL. For example in DBPro my game uses a mesh and vertex adjustments to make a water plain effect - but in C++ it's a custom GL vertex array. It's a bit like having total control over a mesh, it allows some cool tricks that are pretty difficult to replicate in DBPro.
Really though, it'll change within the next 5 years - people are seeing C++ as a low level language like C these days. Game centric languages and scripts are more viable now. An engine developer is always gonna need the low level languages, but game programmers won't. I'd say that making a good mod for a popular game is better for your CV than just writing a game - what industry people want are those that work well in a team, with an already established engine, not necessarily someone who can do it all from scratch. I think it's much more valuable to show that you can work with people, be a cog, and get results.

I got a fever, and the only prescription, is more memes.
