It did not go well.
While I had a good understanding of the basics, and I could do bitwise logic and such (courtesy of my assembly language and machine language experience), I found myself struggling. Hard. It took me a while to get stuff working, because I had to "feel my way through" on most everything and I was severely handicapped in how complex the code could get before I was lost.
I eventually went back to college and got the Computer Science degree.
Being able to program is a useful skill. But if you don't know enough theory to handle relational databases, trees and other fairly complex data structures, you're hampered right out of the gate. Yeah, that's theory. Being able to code a balanced tree is useful; understanding when you do and DON'T need that data structure is more so.
Additionally, I don't get where they're saying these degrees are all theory. I had to write a pile of assignments in C++ during my college studies, as well as learning enough Scheme, Java and MIPS and x86 Assembly Languages to write assignments in those languages. That's practical, hands-on development, gaining experience with the language and its associated APIs. Additionally, if you do an internship somewhere while you're in college (I didn't, but I've managed/mentored an intern or two, now that I'm an experienced dev), you have hands-on experience with more than just a programming language.
Every company does things a little differently. Different standards, different conventions, different infrastructure. Ergo, it is PHYSICALLY IMPOSSIBLE for someone to walk in, with no existing experience with that company, and go right to work, being productive for the employer on day one. Yes, Human Resources and management keep indulging in that pipe dream. If only the schools would teach THIS, not that. If only they'd spend less time on math and more time on the finer points of this framework. Failing to realize that they'd be chopping out useful theory which could (and quite frequently, will) be useful down the line.
Besides, if you were trained in EXACTLY what this company needed, you would never be able to jump ship to another employer. Too many employers keep finding excuses not to provide raises that keep up with the cost of living. The only way to keep up, these days, is to jump ship every few years. And your next employer will need stuff the last employer didn't need. So, getting trapped in a pipeline which is heavily customized for one employer is bad for your long-term prospects.