The web standard is stability (Score 1)

If you're heavily relying on webkits then you must like walking through minefields on your holiday off. At any moment browser vendors can make a simple update and throw off your entire stylesheet. Used lightly, with care taken that fall back options are acceptable, they are a great benefit to any website, but I have to agree with Microsoft that they're a crutch rather than an innovation. Browser vendors will always dictate what kind of CSS can and can't be used in the market, as great as WC3 is for helping 'standardize the coding masses' any senior level designer will remain nimble and up to date on how this technology changes. When all is said in done, stability is more important than features, so be safe and use webkits with care.