I have a $350 set of tools for pulling and installing automotive press fit wheel bearings (mostly FWD cars but they work for removing late Porsche 944 rear wheel bearings too, in case you cared, Danno). It's essentially a piece of threaded rod and big washers (with centering rings) to fit the various bearings and hubs. I think the thread rod and washer set up is more than adequate for headset installation.

If you want to know why I spent so much for the automotive tools, there's a lot more force being used and the tools are all hardened to allow for use with an impact wrench greatly reducing the time to remove and install bearings (not that I do it very often but the tools paid for themselves in one use). I'll probably use them for installing the headset cups on the new commuter I'm building (without the impact wrench of course).