I think it's a great lens, possibly one of the best wide-angle lenses for APS-C bodies. It focuses quickly and its IQ is razor sharp - even at f/2.8 its sharpness is pretty good.
Frankly, I'd be surprised if you were disappointed with it. The only "complaints" I've heard are the lack of a case and the limited zoom though for the latter, it should be expected (even at its price) to have some compromises to get the aperture.
DSLRs: Canon EOS 7D Mark II, Canon EOS 70D
CSC: Canon EOS M3
Lenses: Canon EF-S 15-85mm f/3.5-5.6 IS USM, EF 50mm f/1.8 II, EF 100-400mm f/4.5-5.6L IS USM, Canon EF-M 18-55mm f/3.5-5.6 IS STM, Canon EF-M 22mm f/2.0 STM