There were several threads on this on the "old forum" and the near unanimous conclusion was that it wouldn't hurt a thing and that you'd get some of the benefits of an SWG (the "feel" of the water, less eye stinging, better for hair/skin, etc.). The benefits you won't get are obviously the convenience of a hands-off Cl source and steadier Cl levels.

I'm probably going to go this route myself but have been waiting until I decide whether to do a high-acid "start-up" on my pool to reduce the blotchiness of the plaster. Don't want to do too much chemistry at once.