promise/defer?

[fat]

The loadrunner api and usecase is already really similar to the promises proposals:

• http://wiki.commonjs.org/wiki/Promises/A
• http://wiki.commonjs.org/wiki/Promises/B
• http://wiki.commonjs.org/wiki/Promises/D

briefly... code looks something like:

when(thishappens, function() {
   //do something
});

//  or

when(thishappens).then(do something)

This is simliar to the loadrunner api:

 using(thisFile, function({...});

  // and 

using(thisFile).then(function(){...});

My question/thought is why not allow these two apis to interface -- Then you could do something like this:

when(jsonReturns, animationCompletes, fileLoads).then(function(){
  //do something here...
});

Also, I'm imagining loadrunner becoming more of an extension of promise/defer then I'm think of promise/defer becoming an extension of loadrunner. Just an idea -- more than an issue really.