KatieRose is such a lovely font. According to the calligrapher who designed it, it was made “to have an elegant, handwritten feel, without the fussiness of traditional calligraphic scripts.” Its sculptural strokes are easy on the eyes, luckily, at both big and small sizes.
If your budget is such that you have to pass on traditional calligraphy, but are still dying for the look, I’d ask your stationer togive KatieRose a try. It won’t have that special calligraphy sense of touch (the ink makes it a little raised) but it will still portray the look of it. And that’s a win-win for everyone!