As someone who currently only has APS-C bodies, and wants a 35mm... Even *I* am not excited by this! I'd rather save a bit longer and get the full-frame compatible EF 35 2.0 IS or the 1.4L (version I's can be found for good prices!)
As a beginner lens, sure, go for it... Which is what it seems Canon thinks of EF-S mount. I feel like Canon will never do another serious EF-S lens like the 17-55 2.8.