I like a good vampire trope as much as the next gal, but I do have my limits. A red-haired Scottish vampire in a kilt is kind of pushing it. Especially as he is meant to be 500 years old but treats the late Victorian costume kilt as if it was authentic.
That said the vampire hero is funny and charming, and the mortal slayer heroine is ironic and independent. The romance between them is amusing enough, although the ending is even more of a forgone conclusion than usual and the adventure sub-plot is thin-to-non-existent.
Overall I would give this a 3/5.