At risk of sounding rude, you're wrong. It's one of the hallmarks of Godin guitars, especially in the early days of the acousticaster style guitars they were making. This has continued, and the 'acoustic pickup' is considered an integral part of many Godin guitars.
If one company wasn't enough-- Paul Reed Smith also offers models with piezo pickups that are done hexaphonically and in some sort of scientifically balanced way that I have no clue how to describe. In other words, they spent time and energy engineering a solidbody that will sound a lot like an acoustic, and which allows the option to blend the two signals.
It's not uncommon, really... there are lots of commercially available 'piezo-loaded' electric guitar bridges available. I'm still surprised that you think it's an odd idea considering how common it is.
Greg