No impact in leaving the EU.
Of course there will be, but what will the effects be?
Result: Neither
It seems that only the EU did real impact studies.
Taking the first study from the EU, on Agricultural Trade, they suggest "trade is likely to decrease steeply, especially for meat and dairy sectors. However, there might be an opportunity for an increase in production in a reduced number of European sectors, such as red meat, cattle or wheat, to replace imports from the UK. More generally, Ireland is likely to be the most negatively impacted country and deserves particular attention during the Brexit process."
If you disagree, or would like to add more details, please let me know.
You can suggest a reason for leaving the EU, or look at the other reasons.