What a great job that must be!
Converting infrared digital cameras is nothing new, it's been happening ever since digital photography went mainstream.
I used to shoot lots of infrared film, mostly HIE, which I still maintain was the best B&W emulsion ever made.
But now, using digital cameras to shoot infrared is so much easier, and dare I say, provides better results. So much so that I'd never go back to shooting infrared film, unless HIE got resurrected.
I usually have my cameras converted to 720nm as it provides some color, but it's not as garish-looking as, say, a camera converted to 550nm.
In any case, the possibilities are endless and there are some excellent, interesting lenses always being made available for the digital shooter, so it's an exciting way to shake things up.