It's "only" disadvantages is that it has noticeable distortion at 28mm and that is flare prone? HAR!
That’s like buying a car with its "only" disadvantages being a wimpy engine and a bad suspension...
Every 24-to-something or 28-to-something I've had or used showed more distortion than a 24 or 28 prime. It is something you have to live with when using a wide to tele zoom.
And all non Pentax lenses I have used have shown worse coatings than SMC.

