I tend to steer clear of them, but sometimes they just... make the most sense. The only combo I have that fits the bill, I believe, is Eva Antonina
just doesn't fit as well for me, because the name loses it's Slavic/ Latin charm. Conversely, I know a Natalia Jessica
and (as much as I adore her), I've always thought the name just sounded so forced
So yeah, in summation: if it sounds good as soon as you say it/think of it, it probably is. If you have to convince yourself to like it, I'd say don't bother.