Right there you reveal one problem, and perhaps another. First, it doesn't matter three spits in a strong north wind what you enjoy, relative to submission manuscripts, and the sooner you realize that, the better off you'll be. It matters what the person you're submitting to "enjoys". That, and nothing else.
Regards italics, many editors prefer underlining simply because it's easier to see in a manuscript. I do a lot of technical editing, where scientific names are required to be rendered in final print production in italics. In manuscript, I virulently prefer underlining for exactly this reason.
Second (and I don't know if this applies, but your statement makes me suspicious), if you "enjoy" using italics, does that mean you're using a lot of italics in your writing? If so, I'd recommend you take a good hard brutally sadistic look at the use of such a font device. Many readers absolutely hate the overuse of italic font.
caw