Judging by the way it tries to take over our allotment, you should have no problems with it whatsoever. When we first got our plot, after going away for a week we returned to find it covered with a carpet of reddish green seedlings. They turned out to be self-seeding calaloo, on a mission to conquer the known world. We just about got it under control, but it stills pops up every now and then.
As for the question of what it is like: well, Mrs Low did a great job of cooking some with garlic and chili, and very nice it was too, but I still think spinach is better.