Yes, exactly as I'm doing now. But it's a big annoy, I have to add a geometry, and move it with the light if I need to move the light, and so on...
I agree with Ondra, web described in IES file depends by a lot of value, maybe the most important is the shape of the light bulb and the shape of the "case" of the light. So, actually, if point of view is out of the web, light source is not visible.
But.
When I prepare conceptual render I often need this kind of solution. It could be very useful to have the capability to force light source visibility. And (Ondra, I apologize for the next words...) I think it is not thousand rows of codes :|||| (ok, I'm joking Ondra, don't be angry;) )
It's just me? If it's, ok, I'll go on with creating a lighted surface above the light.