If they "catch you" your article is tagged so that all readers can see that you're editing the article. On top of being annoying, it can cause major issues for you or your business, as I covered in a previous post about Editing with a Conflict of Interest.
While Wikipedia's policy on COI editing clearly states that it's not forbidden, it also states that it's "strongly discouraged."
If you have any experience in spotting COI editors, you see people make the same mistakes every single day. While WCS can help you understand how not to make those mistakes, you still won't "get away" with editing with a COI. You must still present neutral information. WCS goes one step further and helps you maintain anonymity while also following Wikipedia's hundreds of policies and guidelines.
There's no reason to try and get around Wikipedia's policies and guidelines and in the end, it won't really work. Let WCS help you present the information you want presented and do it while following the rules. It's a win-win for everyone involved.