I researched these last year for the same reason. I didn't find anything reliable, lots of complaints about failures. I looked at the Rockler as well. I'm not sure I found anything that would support that wattage either. Jessem used to sell one and they discontinued it, I suspect because of problems, but thats a guess. I ended up buying another router.
Thats going to be specific to the dimmer, most don't have support for that much wattage. If you find the right switch though, this seems like a good idea. Just be aware some of those are designed for different purposes and I suspect that impacts the output waveform etc.