I haven't had it in from a can but I'd venture to guess it's far inferior. Which, I first had haggis this past summer in Scotland and expected not to like it at all, but I absolutely loved it - much to my surprise! My first taste was a cheap package from Tesco heated up on our cabin's stovetop but the next meal was at a B&B which sources its meat from a quality local butcher...the latter was even better.

Back to the topic, I'll eat some beetroot in salads but haven't tried it on sandwiches. I tend to think it would be a bit too much of it sliced onto a sandwich, for my taste. But I suppose I should try it before dismissing it entirely.