Well, basically, it all depends on who and where you are cutting.
A professionally mastered mix is great for digital media, but for vinyl I would (and do) supply work mixed but unmastered.
Otherwise the track is mastered twice.
If your music is going to a good engineer, with good reputation for you type of music, then I would attend with an unmastered track.
If it was still the good engineer but you ca`nt attend, I would still go with unmastered, and trust their rep.
If it`s a el cheapo press and master, then you would be better of supplying a well mastered track (ask your mastering engineer to master with vinyl in mind).
As el cheapo press and master will just run your tune through basic vinyl prep and nothing else.
One day soon, vinyl will just be unfinancially viable, and then none of us will have to worry about the hideous sonic restrictions of that medium.