If you're looking for aggressive, cheap, and IGH... you're not going to find it. I've tried.

It's getting better, but you're still going to have a pretty hard time finding a bike with drops or a good range of hand positions with an internally geared hub. Partly, this is not the bike company's fault. At present, Shimano, and SRAM do not offer stock shifting setups that will fit on bars in any diameter execept mountain. That leaves the bike companies cursing, or just continuing on with relatively relaxed bike fits.

There are aftermarket shifters available that will work with road diameter bars. And it looks like S-A is making their own bar-end shifter, but only for the 5 speed... and it's pretty new. Given the stuff that can go wrong in kludging a bar end to work, I would not want to be an early adopter on this. I especially wouldn't want to be an early adopter on a bike that didn't have good mechanics to back me up... I'm pretty handy, but anyone can make a dumb mistake with unfamiliar mechanical stuff. Since dumb mistakes on IGH tends to mean the planetary gears chew on themselves, they can be pretty expensive.

The solution my partner went for in the end was the best quality single speed road bike we could afford and that fit him well. Eventually, it will get upgraded with an IGH rear wheel. He's not in a big rush, since he's been very pleasantly surprised with how well he can climb and sprint with the single speed. It's not geared high at all, only about 65 gear inches, but it's good enough that he's regularly hitting 20mph average speed on sprints home.

(when he talks about the bike, he also points out that he went from a 45lb bike to about a 25lb bike, and that makes a big difference)